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CAS No. : | 67929-86-6 | MDL No. : | MFCD01074509 |
Formula : | C11H11NO3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | OXXJVMUTSUYQBR-UHFFFAOYSA-N |
M.W : | 205.21 | Pubchem ID : | 2728184 |
Synonyms : |
|
Num. heavy atoms : | 15 |
Num. arom. heavy atoms : | 9 |
Fraction Csp3 : | 0.18 |
Num. rotatable bonds : | 3 |
Num. H-bond acceptors : | 3.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 56.07 |
TPSA : | 51.32 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -5.98 cm/s |
Log Po/w (iLOGP) : | 2.23 |
Log Po/w (XLOGP3) : | 2.21 |
Log Po/w (WLOGP) : | 1.96 |
Log Po/w (MLOGP) : | 1.09 |
Log Po/w (SILICOS-IT) : | 2.37 |
Consensus Log Po/w : | 1.97 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -2.75 |
Solubility : | 0.364 mg/ml ; 0.00178 mol/l |
Class : | Soluble |
Log S (Ali) : | -2.92 |
Solubility : | 0.245 mg/ml ; 0.0012 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -3.49 |
Solubility : | 0.0659 mg/ml ; 0.000321 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.65 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280 | UN#: | N/A |
Hazard Statements: | H302-H317 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
52% | With hydrogenchloride In methanol at 40 - 50℃; for 3h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
69% | With sodium hydrogencarbonate In N,N-dimethyl-formamide for 28h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | With lithium aluminium tetrahydride In tetrahydrofuran at 20℃; for 5h; Cooling with ice; | 4.2. General procedure for the synthesis of indol-2-ylmethanol(12a-12q) General procedure: A solution of indole-2-carboxylate 11 (1 mmol) in THF (10 mL)was added dropwise to a suspension of LiAlH4 (0.8 mmol) in THF(20 mL) under cooling with ice-water. After stirring at rt for 5 h, thereaction mixture was quenched with water, and then was filtratedthrough a Celite pad. The filtrate was extracted with EtOAc. Theorganic layer was washed with brine, dried over Na2SO4, andevaporated in vacuo. The residue was purified by column chromatography using EtOAc-hexane as an eluent to give thealcohol 12. |
With lithium aluminium tetrahydride In tetrahydrofuran for 0.75h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98.7% | With sulfuric acid; for 6h;Reflux; | A mixture of 9.6 g (0.050 mol) of 5-methoxy-lH-indole-2-carboxylic acid and 4.5 mL of concentrated sulfuric acid in 250 mL of methanol was refluxed for 6 h. The reaction mixture was cooled, concentrated in vacuo and 200 mL of water and 200 mL of dichloromethane was added to the residue. The organic layer was separated and the water phase was extracted with 100 mL of dichloromethane. The combined organic layers were washed with water and saturated sodium hydrogencarbonate solution, dried over sodium sulfate, concentrated and dried to yield 10.17 g (98.7 %) of the title compound. Mp: 178-181 C. |
98.7% | With sulfuric acid; In methanol; for 6h;Reflux; | a) 5-Methoxy-1H-indole-2-carboxylic acid methyl ester A mixture of 9.6 g (0.050 mol) of <strong>[4382-54-1]5-methoxy-1H-indole-2-carboxylic acid</strong> and 4.5 mL of concentrated sulfuric acid in 250 mL of methanol was refluxed for 6 h. The reaction mixture was cooled, concentrated in vacuo and 200 mL of water and 200 mL of dichloromethane was added to the residue. The organic layer was separated and the water phase was extracted with 100 mL of dichloromethane. The combined organic layers were washed with water and saturated sodium hydrogencarbonate solution, dried over sodium sulfate, concentrated and dried to yield 10.17 g (98.7%) of the title compound. Mp: 178-181 C. |
96% | With sulfuric acid; for 4h;Reflux; | A few drops of concentrated sulphuric acid were added to a suspension containing <strong>[4382-54-1]5-methoxyindole-2-carboxylic acid</strong> (1, 2.00 g, 0.01 mol) in absolute methanol (30 mL). The reaction mixture was heated to reflux for 4 h, cooled to room temperature, and the precipitated solid filtered off to give 2.1 g (96%) of MMIC (2) as yellow crystals, m.p. 450e451 K [13]. |
With sulfuric acid; for 24h;Reflux; | General Procedure: To an ice-cold solution of indole-2-carboxylic acid (5.0 g) in methanol (60 mL) was added concentrated sulphuric acid (5 mL). The reaction mixture was refluxed for 24 h and concentrated under reduced pressure. To this reaction mixture was added ice-cold water (50 mL) and extracted with EtOAc (3 X 50 mL). The organic layer was dried over anhydrous Na2SO4, filtered and concentrated to afford the pure product. | |
With sulfuric acid; for 24h;Cooling with ice; Reflux; | General procedure: To an ice-cold solution of indole-2-carboxylic acid (5.0 g) in methanol (60 mL) was added concentrated sulphuric acid (5 mL).The reaction mixture was refluxed for 24 h and concentrated under reduced pressure. To this reaction mixture was added ice-cold water (50 mL) and extracted with EtOAc (3 × 50 mL). The organic layer was dried over anhydrous Na2SO4, filtered and concentrated to afford analytically pure product (98% yield) which was used for the next step without further purification. | |
With thionyl chloride; for 4h;Reflux; | Into a 250-mL round-bottom flask was placed a solution of <strong>[4382-54-1]5-methoxy-1H-indole-2-carboxylic acid</strong> (10 g, 52.31 mmol, 1.00 equiv) in methanol (100 mL), followed by the additionof thionyl chloride (12.5 g, 105.07 mmol, 2.00 equiv) dropwise with stirring. The resulting solution was heated to reflux for 4 h, cooled to room temperature and concentrated under vacuum to afford 11 g (crude) of methyl 5-methoxy-1H-indole-2-carboxylate as a gray solid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
61% | With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | With sodium nitrite In acetic acid for 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
3.5% | Stage #1: N-chloro-succinimide; 3,4,5-trimethoxyphenylmercaptan In dichloromethane at -78 - 0℃; for 0.25h; Stage #2: methyl 5-methoxyindole-2-carboxylate In dichloromethane at 0℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
24% | With boron trifluoride diethyl etherate In dichloromethane at 20 - 45℃; for 3.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | With sodium hydroxide Heating; | |
With potassium hydroxide In dimethyl sulfoxide at 20℃; for 0.5h; Inert atmosphere; | ||
With sodium hydroxide In tetrahydrofuran; methanol; water |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 55% 2: 39.6% | In 5,5-dimethyl-1,3-cyclohexadiene Inert atmosphere; Reflux; | |
1: 37% 2: 28% | In xylene Heating; | |
1: 27% 2: 12% | In toluene at 220℃; continuous flow reactor; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
97% | With dmap In acetonitrile at 20℃; for 72h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydroxide In acetone at 0 - 20℃; | ||
Stage #1: methyl 5-methoxyindole-2-carboxylate With sodium hydride In N,N-dimethyl-formamide; mineral oil at 10℃; for 0.5h; Inert atmosphere; Stage #2: methyl iodide In N,N-dimethyl-formamide; mineral oil at 20℃; | 24D; 24E Synthesis of quinone 4 Into a 5-L 4-necked round-bottom flask, purged and maintained with an inert atmospherenitrogen, was placed N,N-dimethylformamide (2 L), followed by the addition of sodiumhydride (37.6 g, 1.10 mol, 1.50 equiv, 70%) in several batches with stirring. To this was added methyl 5-methoxy-1H-indole-2-carboxylate (150 g, 730.96 mmol, 1.00 equiv) dropwise with stirring at less than 10°C. The mixture was stirred for 0.5 h. To the mixture was added Mel (125 g, 0.88 mol, 1.20 equiv) dropwise with stirring. The resulting solution was stirredovernight at room temperature and diluted with 5 L of water. The solids were collected by filtration, washed with 3x1 L of water and dried to afford 163 g (crude) of methyl 5-methoxy-1- methyl-1H-indole-2-carboxylate as a yellow solid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydroxide In acetone at 0 - 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
52% | With trifluoroacetic acid at 0 - 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: Grubbs' catalyst Ru627 / CH2Cl2 / 12 h / Heating 5.1: 3,5-dinitrobenzoic acid; (2S,5S)-5-benzyl-2-tert-butyl-3-methyl-imidazolidin-4-one / diethyl ether / 24 h / 0 °C 5.2: NaBH4 / methanol / 0.25 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: Grubbs' catalyst Ru627 / CH2Cl2 / 12 h / Heating 5.1: 3,5-dinitrobenzoic acid; (2S,5S)-5-benzyl-2-tert-butyl-3-methyl-imidazolidin-4-one / diethyl ether / 24 h / 0 °C 5.2: NaBH4 / methanol / 0.25 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: 51 percent / Grubbs' catalyst Ru627 / CH2Cl2 / 17 h / Heating 5.1: 3,5-dinitrobenzoic acid; (2S,5S)-5-benzyl-2-tert-butyl-3-methyl-imidazolidin-4-one / diethyl ether / 168 h / -20 °C 5.2: NaBH4 / methanol / 0.25 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: 51 percent / Grubbs' catalyst Ru627 / CH2Cl2 / 17 h / Heating 5.1: 3,5-dinitrobenzoic acid; (2S,5S)-5-benzyl-2-tert-butyl-3-methyl-imidazolidin-4-one / diethyl ether / 168 h / -20 °C 5.2: NaBH4 / methanol / 0.25 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: KOH / acetone / 0 - 20 °C 2: LiAlH4 / tetrahydrofuran / 0 - 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: Grubbs' catalyst Ru627 / CH2Cl2 / 12 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: 51 percent / Grubbs' catalyst Ru627 / CH2Cl2 / 17 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: Grubbs' catalyst Ru627 / CH2Cl2 / 12 h / Heating 5.1: 3,5-dinitrobenzoic acid; (2S,5S)-5-benzyl-2-tert-butyl-3-methyl-imidazolidin-4-one / diethyl ether / 24 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: Grubbs' catalyst Ru627 / CH2Cl2 / 12 h / Heating 5.1: 3,5-dinitrobenzoic acid; (2S,5S)-5-benzyl-2-tert-butyl-3-methyl-imidazolidin-4-one / diethyl ether / 24 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: 51 percent / Grubbs' catalyst Ru627 / CH2Cl2 / 17 h / Heating 5.1: 3,5-dinitrobenzoic acid; (2S,5S)-5-benzyl-2-tert-butyl-3-methyl-imidazolidin-4-one / diethyl ether / 168 h / -20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: KOH / acetone / 0 - 20 °C 2.1: LiAlH4 / tetrahydrofuran / 0 - 20 °C 3.1: NaH / tetrahydrofuran / 0.5 h / 0 - 20 °C 3.2: tetrahydrofuran / 2 h / 20 °C 4.1: 51 percent / Grubbs' catalyst Ru627 / CH2Cl2 / 17 h / Heating 5.1: 3,5-dinitrobenzoic acid; (2S,5S)-5-benzyl-2-tert-butyl-3-methyl-imidazolidin-4-one / diethyl ether / 168 h / -20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: KOH / acetone / 0 - 20 °C 2: LiAlH4 / tetrahydrofuran / 0 - 20 °C | ||
Multi-step reaction with 2 steps 1.1: sodium hydride / N,N-dimethyl-formamide / 0 °C / Inert atmosphere 1.2: 0 - 20 °C / Inert atmosphere 2.1: lithium aluminium tetrahydride / tetrahydrofuran / 0 - 20 °C / Inert atmosphere | ||
Multi-step reaction with 2 steps 1.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.5 h / 10 °C / Inert atmosphere 1.2: 20 °C 2.1: lithium aluminium tetrahydride / tetrahydrofuran / 3.5 h / 0 - 20 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 97 percent / 4-(dimethylamino)-pyridine / acetonitrile / 72 h / 20 °C 2: 86 percent / hydrogen / Pd/C / methanol / 18 h / 20 °C / 15001.2 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 97 percent / 4-(dimethylamino)-pyridine / acetonitrile / 72 h / 20 °C 2: 86 percent / hydrogen / Pd/C / methanol / 18 h / 20 °C / 15001.2 Torr 3: lithium hydroxide / tetrahydrofuran; H2O / 18 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 97 percent / 4-(dimethylamino)-pyridine / acetonitrile / 72 h / 20 °C 2: 86 percent / hydrogen / Pd/C / methanol / 18 h / 20 °C / 15001.2 Torr 3: lithium hydroxide / tetrahydrofuran; H2O / 18 h / 20 °C 4: 2.81 g / hydrogen chloride / ethyl acetate / 1 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 65 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 91 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr 7.1: 84 percent / Na2HPO4; Na/Hg / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 62 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 83 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr 7.1: 95 percent / Na2HPO4; Na/Hg / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 76 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 91 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr 7.1: 71 percent / Na2HPO4; Na/Hg / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 84 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 91 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr 7.1: 87 percent / Na2HPO4; Na/Hg / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 94 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 91 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr 7.1: 72 percent / Na2HPO4; Na/Hg / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 65 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 91 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 71 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 94 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr 7.1: 85 percent / Na2HPO4; Na/Hg / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 62 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 83 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 76 percent / tetrahydrofuran; hexane / -78 - 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 65 percent / tetrahydrofuran; hexane / -78 - 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 76 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 91 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 84 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 91 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 62 percent / tetrahydrofuran; hexane / -78 - 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 94 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 91 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 84 percent / tetrahydrofuran; hexane / -78 - 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 71 percent / tetrahydrofuran; hexane / -78 - 0 °C 6.1: 94 percent / H2 / Pd/C / ethanol / 20 °C / 760 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 94 percent / tetrahydrofuran; hexane / -78 - 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: 99 percent / aq. NaOH / Heating 2.1: 77 percent / Cu; quinoline / Heating 3.1: 90 percent / phosphoryl chloride / 0 - 40 °C 4.1: NaOH / CH2Cl2 / 20 °C 4.2: 95 percent / CH2Cl2 / 20 °C 5.1: n-BuLi / tetrahydrofuran; hexane / 0 °C 5.2: potassium tert-butoxide / tetrahydrofuran; hexane / 0 °C 5.3: 71 percent / tetrahydrofuran; hexane / -78 - 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 62 percent / NaNO2 / acetic acid / 2 h 2: 68 percent / KMnO4; NaOH / H2O / 0.5 h 3: 61 percent / 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochlorid; 1-hydroxybenzotriazole hydrate; Et3N / CH2Cl2; dimethylformamide / 18 h 4: 79 percent / H2 / Pd/C / methanol / 3.5 h / 38000 Torr 5: 60 percent / HgCl2; CaCO3 / acetonitrile; H2O / 8 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 62 percent / NaNO2 / acetic acid / 2 h 2: 68 percent / KMnO4; NaOH / H2O / 0.5 h 3: 61 percent / 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochlorid; 1-hydroxybenzotriazole hydrate; Et3N / CH2Cl2; dimethylformamide / 18 h 4: 79 percent / H2 / Pd/C / methanol / 3.5 h / 38000 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 61 percent / 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium-PF6; diisopropylethylamine / acetonitrile / 20 °C 2: 72 percent / NaOH / dimethylformamide; methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: 61 percent / 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium-PF6; diisopropylethylamine / acetonitrile / 20 °C 2.1: 72 percent / NaOH / dimethylformamide; methanol / 20 °C 3.1: HCl / ethyl acetate / 20 °C 3.2: 59 percent / EDCI / dimethylformamide / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: LiAlH4 / tetrahydrofuran / 0.75 h / Ambient temperature 2: MnO2 / CH2Cl2 / 7 h / Ambient temperature 3: NH4OAc / 1.5 h / Heating 4: LiAlH4 / tetrahydrofuran / 5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: LiAlH4 / tetrahydrofuran / 0.75 h / Ambient temperature 2: MnO2 / CH2Cl2 / 7 h / Ambient temperature 3: NH4OAc / 1.5 h / Heating 4: LiAlH4 / tetrahydrofuran / 5 h / Ambient temperature 5: Et3N / tetrahydrofuran / 6 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: LiAlH4 / tetrahydrofuran / 0.75 h / Ambient temperature 2: MnO2 / CH2Cl2 / 7 h / Ambient temperature 3: NH4OAc / 1.5 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: LiAlH4 / tetrahydrofuran / 0.75 h / Ambient temperature 2: MnO2 / CH2Cl2 / 7 h / Ambient temperature 3: 1,7-diazabicyclo<4.5.0>undec-6-ene / toluene / 0.5 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: LiAlH4 / tetrahydrofuran / 0.75 h / Ambient temperature 2: MnO2 / CH2Cl2 / 7 h / Ambient temperature 3: 1,7-diazabicyclo<4.5.0>undec-6-ene / toluene / 0.5 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
97% | With N-chloro-succinimide In dichloromethane at -78 - 0℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
58% | With NaH In water; ethyl acetate; N,N-dimethyl-formamide | 2.A A. A. 1-[2-(Morpholino)ethyl]-5-methoxy-2-indolecarboxylate methyl ester A solution of methyl 5-methoxy-2-indolecarboxylate (36 mg, 0.17 mmol) and N-(2-chloroethyl)morpholine.HCl (39 mg, 0.21 mmol) in DMF (2 mL) at 0° C. was added to NaH (18 mg, 0.44 mmol, 60% in oil) in one portion. The ice bath was removed and the reaction mixture allowed to stir for 1 h at RT and then at 65° C. for 16 h. Water (2 mL) was added and the mixture was partitioned between EtOAc and water. Upon extraction with EtOAc (3*25 ml), the combined organic extracts were dried over Na2SO4, filtered, and concentrated in vacuo. The residue was purified by column chromatography (25% then 50% EtOAc/hex) to furnish the above-titled compound A as a white solid (32 mg, 58% yield). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 6.3 g (52%) 2: 6.1 g (88%) | With dimethyl sulfoxide In hydrogenchloride; methanol | 3 Methyl 5-methoxy-3-(methylthio)-1H-indole-2-carboxylate EXAMPLE 3 Methyl 5-methoxy-3-(methylthio)-1H-indole-2-carboxylate A mixture of methyl 5-methoxy-1H-indole-2-carboxylate (8.3 g, 40 mmol; Blaikie KG, Perkin WH Jr, J. Chem. Soc. 1924;125:296) and dimethyl sulfoxide (4.0 mL, 4.4 g, 56 mmol) in 75 mL of methanol is cooled in ice and treated with gaseous HCl. The temperature of the reaction mixture increases to 45° C. as the HCl is added. Additional HCl is added intermittently and the rate of cooling is adjusted so that a reaction temperature of 40°-50° C. is maintained for 3 hours. The mixture is cooled and the precipitated solid filtered and washed with ether to yield 6.3 g (52%) of [5-methoxy-2-(methoxycarbonyl)-1H-indol-3-yl] dimethylsulfonium chloride suitable for further synthesis; mp 130° C.-dec. A suspension of the above salt product (8.3 g, 8 mmol) in 50 mL of N,N-dimethylformamide is immersed in an oil bath preheated to 120° C. The mixture is occasionally stirred as the solid gradually dissolves over 10 minutes. The cooled reaction mixture is added to 500 g of ice and water, and the precipitated solid is filtered and washed with 25% methanol-water to yield 6.1 g (88%) of product, suitable for further synthesis. A sample recrystallized from aqueous acetonitrile has mp 128°-130° C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In methanol; hexane; ethyl acetate | Methyl 5-methoxy indole-2-carboxylate (32) Methyl 5-methoxy indole-2-carboxylate (32) Six grams of 5-methoxy indole-2-acetonitrile was dissolved in 60 mL of methanol and the solution was cooled in an ice-bath while dry HCl gas was bubbled into the solution. After 30 minutes the mixture was heated to 40°-45° C. while the HCl was still being added for an additional 3 hours. The flask was stoppered and allowed to stand at room temperature overnight. The next day most of the the methanol was removed in vacuo and the residue was dissolved in ether. The ether solution was thoroughly washed with water, NaHCO3 solution and again with water. The dried ether extract was taken to dryness and the residue was chromatographed on silica gel using ethylacetate/hexane as the developing solvent. There was obtained 6.0 g of the desired methyl ester, m.p. 94°-95° C. after crystallization from benzenehexane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
28% | With caesium carbonate; cesium fluoride In 1,2-dimethoxyethane at 90℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
83% | Stage #1: methyl 5-methoxyindole-2-carboxylate With potassium <i>tert</i>-butylate In N,N-dimethyl-formamide at 20℃; for 0.666667h; Inert atmosphere; Stage #2: chloroacetonitrile In N,N-dimethyl-formamide at 20 - 65℃; Inert atmosphere; Stage #3: With sodium hydrogencarbonate In water; ethyl acetate; N,N-dimethyl-formamide Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dirhodium(II) tetrakis(perfluorobutyrate) In toluene at 40℃; for 16h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
20% | With aluminum (III) chloride In 1,2-dichloro-ethane at 25 - 110℃; Microwave irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
35% | Stage #1: 4-chlorobenzamidoxime With sodium ethanolate In ethanol at 20℃; for 0.5h; Stage #2: methyl 5-methoxyindole-2-carboxylate In ethanol Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
27% | Stage #1: 4-methoxybenzamidoxime With sodium ethanolate In ethanol at 20℃; for 0.5h; Stage #2: methyl 5-methoxyindole-2-carboxylate In ethanol Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
13% | Stage #1: acetamide oxime With sodium ethanolate In ethanol at 20℃; for 0.5h; Stage #2: methyl 5-methoxyindole-2-carboxylate In ethanol Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
37% | Stage #1: N-hydroxybenzenecarboximidamide With sodium ethanolate In ethanol at 20℃; for 0.5h; Stage #2: methyl 5-methoxyindole-2-carboxylate In ethanol Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | With oxygen; sodium iodide In dimethyl sulfoxide at 120℃; for 16h; Schlenk technique; Green chemistry; regioselective reaction; | |
60% | With manganese(IV) oxide; iodine; oxygen at 120℃; for 48h; Schlenk technique; | |
3.5% | Stage #1: 3,4,5-trimethoxyphenylmercaptan With N-chloro-succinimide In dichloromethane at -78 - 0℃; for 0.25h; Stage #2: methyl 5-methoxyindole-2-carboxylate In dichloromethane at 0℃; for 1h; | 11 To a solution cooled to -78 °C of N-chlorosuccinimide (0.68 g, 0.0051 mol) in anhydrous dichloromethane (40 mL) was added 3,4,5- trimethoxybenzenethiol (33) (1.02 g, 0.0051 mol). Compound 33 prepared according to procedure in Offer, J.; Boddy, C. N. C; Dawson, P. E. Extending synthetic access to proteins with a removable acyl transfer auxiliary. J. Am. Chem. Soc. 2002, 124, 4642-4646. The reaction was warmed to 0 °C over 15 min, and a solution of methyl 5- methoxyindole-2-carboxylate (26) (0.87 g, 0.00424 mol) in anhydrous EPO dichloromethane (16 HiL) was added. The reaction was stirred at 0 °C for 1 h and then concentrated under reduced pressure. The residue was suspended in water (24 niL) and stirred for 1 h. The mixture was extracted with ethyl acetate; the organic layer was washed with brine and dried. Removal of the solvent furnished a crude product that was purified on a silica gel column (ethyl acetate-«-hexane 1 :2) to afford 21, yield 3.5 %, mp 123-128 0C (from ethanol). 1H NMR (CDCl3): δ 3.68 (s, 6H), 3.74 (s, 3H)3 3.78 (s, 3H), 3.94 (s, 3H), 6.48 (s, 2H)5 6.92 (d, J = 2.40 Hz, IH), 7.01 (dd, J = 8.92 and 2.45 Hz, IH), 7.32 (d, J = 8.93 Hz, IH), 9.16 ppm (broad s, IH, disappeared on treatment with D2O). IR (nujol): 3293, 1683 cm"1. Anal. Calcd. (C20H21NO6S (403.46)) C, H, N, S. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With 5,10,15,20-tetrakis(pentafluorophenyl)-21H,23H-porphyrin iron(III) chloride In 1,2-dichloro-ethane for 18h; Molecular sieve; Reflux; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: methyl 5-methoxyindole-2-carboxylate With sodium hydride In N,N-dimethyl-formamide at 0℃; Inert atmosphere; Stage #2: Me-X In N,N-dimethyl-formamide at 0 - 20℃; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: methyl 5-methoxyindole-2-carboxylate With potassium hydroxide In N,N-dimethyl-formamide for 0.25h; Stage #2: With iodine In N,N-dimethyl-formamide for 3h; | General procedure for the iodination of indole-2-carboxylic acid methyl ester (3a and 3b) General Procedure: To a solution of indole-2-carboxylic acid methyl ester (5.0 g) in 15 mL of DMF was added powdered KOH (3.0 equiv) and stirred for 15 min. To this mixture was added a solution of iodine (1.1 equiv) in DMF (15 mL) and stirred for 3 h. After completion of the reaction as indicated by TLC, the reaction mixture was quenched with 10% NaHSO3 and extracted with EtOAc (3 X 30 mL). The EtOAc extract was repeatedly washed with 10% Na2S2O3 and aqueous ammonia. The combined organic extract was dried over anhydrous Na2SO4 and concentrated under reduced pressure to afford the pure product. | |
Stage #1: methyl 5-methoxyindole-2-carboxylate With potassium hydroxide In N,N-dimethyl-formamide for 0.25h; Stage #2: With iodine In N,N-dimethyl-formamide at 20℃; | 2.2b General procedure for the iodination of indole-2-carboxylic acid methyl ester 3a and 3b: General procedure: To a solution of indole-2-carboxylic acid methyl ester (5.0 g) in 15mL of DMF was added powdered KOH (3.0 equiv) and stirred for 15 min. To this mixture was added a solution of iodine (1.1 equiv) in DMF (15 mL) and stirred for 3 h. After completion of the reaction as indicated by TLC, the reaction mixture was quenched with 10% NaHSO3 and extracted with EtOAc (3 × 30 mL).The EtOAc extract was repeatedly washed with 10%Na2S2O3 and aqueous ammonia. The combined organic extract was dried over anhydrous Na2SO4 and concentrated under reduced pressure to afford the pure product (90% yield) which was used for the next step without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98.7% | With potassium carbonate In toluene for 38h; Reflux; | 30.b A mixture of 5.5 g (26.8 mmol) of 5-methoxy-lH-indole-2-carboxylic acid methyl ester, 3.0 g (40.5 mmol) of N-hydroxy-acetamidine and 10 g (72.3 mmol) of potassium carbonate in 150 mL of toluene was refluxed for 18 h, then additional 2.0 g (27 mmol) of N-hydroxy-acetamidine and 5 g (36.1 mmol) of potassium carbonate was added. The reaction mixture was refluxed for 20 h, cooled to 20 °C, filtered, the filtrate was concentrated and dried to yield 5.45 g (98.7 %) of the title compound. Mp: 141-142 °C. MS (EI) 230.2 (MH+). |
98.7% | With potassium carbonate In toluene for 38h; Reflux; | 30.b b) 5-Methoxy-2-(3-methyl-[1,2,4]oxadiazol-5-yl)-1H-indole b) 5-Methoxy-2-(3-methyl-[1,2,4]oxadiazol-5-yl)-1H-indole A mixture of 5.5 g (26.8 mmol) of 5-methoxy-1H-indole-2-carboxylic acid methyl ester, 3.0 g (40.5 mmol) of N-hydroxy-acetamidine and 10 g (72.3 mmol) of potassium carbonate in 150 mL of toluene was refluxed for 18 h, then additional 2.0 g (27 mmol) of N-hydroxy-acetamidine and 5 g (36.1 mmol) of potassium carbonate was added. The reaction mixture was refluxed for 20 h, cooled to 20° C., filtered, the filtrate was concentrated and dried to yield 5.45 g (98.7%) of the title compound. Mp: 141-142° C. MS (EI) 230.2 (MH+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | In toluene at 200℃; for 0.166667h; Microwave irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
69.3% | With aluminum (III) chloride In 1,2-dichloro-ethane Inert atmosphere; Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | Stage #1: N,N-dimethyl-formamide With trichlorophosphate at 0℃; for 0.166667h; Inert atmosphere; Stage #2: methyl 5-methoxyindole-2-carboxylate at 0 - 60℃; for 4.66667h; Inert atmosphere; Stage #3: With water; sodium carbonate Cooling; Inert atmosphere; | |
45% | Stage #1: methyl 5-methoxyindole-2-carboxylate; N,N-dimethyl-formamide With trichlorophosphate at 0 - 90℃; for 2.33333h; Inert atmosphere; Stage #2: With water; sodium hydroxide Inert atmosphere; | |
With trichlorophosphate at 20 - 60℃; for 4.5h; Cooling with ice; | General procedure for the synthesis of methyl 3-formylindole-2-carboxylates. General procedure: POCl3 (12 ml, 0.16 mol) was added dropwise to DMF (45 ml, 0.56 mol) in an ice bath, with stirring. A solution of corresponding methyl indole-2-carboxylates (0.15 mol) in DMF (10 ml) was added. The mixture was stirred at room temperature for 30 min and then heated at 40 60°C for 4 h. The mixture was poured onto ice-water (200 g) and neutralized with aqueous NaOH to pH 5 - 6. The resulting precipitate was filtered and crystallized from MeOH. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
67% | With iodine; dimethyl sulfoxide at 80℃; Inert atmosphere; Sealed tube; Green chemistry; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
48% | With potassium phosphate; 1,10-Phenanthroline; copper(ll) sulfate pentahydrate In toluene at 70℃; for 24h; Inert atmosphere; Schlenk technique; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With hydrazine hydrate In methanol Reflux; | |
90% | With hydrazine hydrate In methanol Reflux; | 2.2.2. Synthesis of 5-methoxy-1H-indole-2-carbohydrazide (3) Hydrazine hydrate (0.32 g, 10 mmol) was added to a suspensionof compound 2 (0.21 g, 1 mmol) in methanol (15 mL). The reactionmixture was heated under reflux for 3 hrs, cooled to room temperatureand filtered. The collected solid was dried to give 0.19 g(90%) of the carbohydrazide derivative 3 [23] as a white powder m.p. 266-268 °C which was pure enough to be used in the subsequentreactions. |
With hydrazine hydrate In methanol for 2h; Reflux; |
With hydrazine In methanol for 2h; Reflux; | ||
With hydrazine hydrate In methanol for 3h; Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
47% | With dipotassium peroxodisulfate; sodium nitrite In N,N-dimethyl-formamide at 80℃; for 2h; regioselective reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With N-Bromosuccinimide In N,N-dimethyl-formamide for 2h; Inert atmosphere; regioselective reaction; | 5.1.4. General method C for the synthesis of compounds 10a-g General procedure: To a solution of the appropriate 2-alkoxycarbonyl-1H-indole derivative9a-g (2 mmol) in DMF (20 mL) cooled to 0 °C was addeddropwise a mixture of NBS (0.43 g, 2.4 mmol) in DMF (10 mL), and the resulting mixture was stirred for 1 h. The mixture was then diluted withcold water (30 mL) and extracted with dichloromethane (2 × 20 mL).The combined organics were washed with water (3 × 20 mL), brine(20 mL), dried (Na2SO4) and evaporated to give a solid, which waspurified by crystallization with the appropriate solvent or purified byflash chromatography on silica gel. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
7% | With aluminum (III) chloride In 1,2-dichloro-ethane at 0 - 85℃; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: methyl 5-methoxy-1H-indole-2-carboxylate With Aluminum Chloride at 20℃; for 0.5h; Stage #2: 3-pyridinecarboxyaldehyde at 0 - 20℃; | 47.1 Step 1: methyl 3-(hydroxy(pyridin-3-yl)methyl)-5-methoxy-1 H-indole-2-carboxylate To a solution of ethyl 5-methoxyindolecarboxylate (2.2 g, 10.0 mmol) in DCM (50 ml) was added AICI3 (2.66 g, 20 mmol) and stirred at rt for 30 min and cooled to 0 °C, added 3-pyridinecarbaldehyde (2.1 g, 20 mmol). The mixture was slowly warmed to rt and stirred overnight at rt (observed a big chunk). The mixture was quenched with water and the aq phase was extracted with EtOAc (2 times). The combined org phase was washed with brine and dried over Na2SO4 and concentrated in vacuo. The residue was purified with column chromatography (Hexanes: EtOAc = 0 to 100%) to afford the title compound methyl 3-(hydroxy(pyridin-3-yl)methyl)-5-methoxy-1 H-indole-2-carboxylate which was used in next step. | |
Stage #1: methyl 5-methoxy-1H-indole-2-carboxylate With Aluminum Chloride at 20℃; for 0.5h; Stage #2: 3-pyridinecarboxyaldehyde at 0 - 20℃; | 47.1 Step 1: methyl 3-(hydroxy(pyridin-3-yl)methyl)-5-methoxy-1 H-indole-2-carboxylate To a solution of ethyl 5-methoxyindolecarboxylate (2.2 g, 10.0 mmol) in DCM (50 ml) was added AICI3 (2.66 g, 20 mmol) and stirred at rt for 30 min and cooled to 0 °C, added 3-pyridinecarbaldehyde (2.1 g, 20 mmol). The mixture was slowly warmed to rt and stirred overnight at rt (observed a big chunk). The mixture was quenched with water and the aq phase was extracted with EtOAc (2 times). The combined org phase was washed with brine and dried over Na2SO4 and concentrated in vacuo. The residue was purified with column chromatography (Hexanes: EtOAc = 0 to 100%) to afford the title compound methyl 3-(hydroxy(pyridin-3-yl)methyl)-5-methoxy-1 H-indole-2-carboxylate which was used in next step. |
Tags: 67929-86-6 synthesis path| 67929-86-6 SDS| 67929-86-6 COA| 67929-86-6 purity| 67929-86-6 application| 67929-86-6 NMR| 67929-86-6 COA| 67929-86-6 structure
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P251 | Pressurized container: Do not pierce or burn, even after use. |
P260 | Do not breathe dust/fume/gas/mist/vapours/spray. |
P261 | Avoid breathing dust/fume/gas/mist/vapours/spray. |
P262 | Do not get in eyes, on skin, or on clothing. |
P263 | Avoid contact during pregnancy/while nursing. |
P264 | Wash hands thoroughly after handling. |
P265 | Wash skin thouroughly after handling. |
P270 | Do not eat, drink or smoke when using this product. |
P271 | Use only outdoors or in a well-ventilated area. |
P272 | Contaminated work clothing should not be allowed out of the workplace. |
P273 | Avoid release to the environment. |
P280 | Wear protective gloves/protective clothing/eye protection/face protection. |
P281 | Use personal protective equipment as required. |
P282 | Wear cold insulating gloves/face shield/eye protection. |
P283 | Wear fire/flame resistant/retardant clothing. |
P284 | Wear respiratory protection. |
P285 | In case of inadequate ventilation wear respiratory protection. |
P231 + P232 | Handle under inert gas. Protect from moisture. |
P235 + P410 | Keep cool. Protect from sunlight. |
Response | |
Code | Phrase |
P301 | IF SWALLOWED: |
P304 | IF INHALED: |
P305 | IF IN EYES: |
P306 | IF ON CLOTHING: |
P307 | IF exposed: |
P308 | IF exposed or concerned: |
P309 | IF exposed or if you feel unwell: |
P310 | Immediately call a POISON CENTER or doctor/physician. |
P311 | Call a POISON CENTER or doctor/physician. |
P312 | Call a POISON CENTER or doctor/physician if you feel unwell. |
P313 | Get medical advice/attention. |
P314 | Get medical advice/attention if you feel unwell. |
P315 | Get immediate medical advice/attention. |
P320 | |
P302 + P352 | IF ON SKIN: wash with plenty of soap and water. |
P321 | |
P322 | |
P330 | Rinse mouth. |
P331 | Do NOT induce vomiting. |
P332 | IF SKIN irritation occurs: |
P333 | If skin irritation or rash occurs: |
P334 | Immerse in cool water/wrap n wet bandages. |
P335 | Brush off loose particles from skin. |
P336 | Thaw frosted parts with lukewarm water. Do not rub affected area. |
P337 | If eye irritation persists: |
P338 | Remove contact lenses, if present and easy to do. Continue rinsing. |
P340 | Remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P341 | If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P342 | If experiencing respiratory symptoms: |
P350 | Gently wash with plenty of soap and water. |
P351 | Rinse cautiously with water for several minutes. |
P352 | Wash with plenty of soap and water. |
P353 | Rinse skin with water/shower. |
P360 | Rinse immediately contaminated clothing and skin with plenty of water before removing clothes. |
P361 | Remove/Take off immediately all contaminated clothing. |
P362 | Take off contaminated clothing and wash before reuse. |
P363 | Wash contaminated clothing before reuse. |
P370 | In case of fire: |
P371 | In case of major fire and large quantities: |
P372 | Explosion risk in case of fire. |
P373 | DO NOT fight fire when fire reaches explosives. |
P374 | Fight fire with normal precautions from a reasonable distance. |
P376 | Stop leak if safe to do so. Oxidising gases (section 2.4) 1 |
P377 | Leaking gas fire: Do not extinguish, unless leak can be stopped safely. |
P378 | |
P380 | Evacuate area. |
P381 | Eliminate all ignition sources if safe to do so. |
P390 | Absorb spillage to prevent material damage. |
P391 | Collect spillage. Hazardous to the aquatic environment |
P301 + P310 | IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
P301 + P312 | IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. |
P301 + P330 + P331 | IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. |
P302 + P334 | IF ON SKIN: Immerse in cool water/wrap in wet bandages. |
P302 + P350 | IF ON SKIN: Gently wash with plenty of soap and water. |
P303 + P361 + P353 | IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
P304 + P312 | IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell. |
P304 + P340 | IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. |
P304 + P341 | IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P305 + P351 + P338 | IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
P306 + P360 | IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes. |
P307 + P311 | IF exposed: call a POISON CENTER or doctor/physician. |
P308 + P313 | IF exposed or concerned: Get medical advice/attention. |
P309 + P311 | IF exposed or if you feel unwell: call a POISON CENTER or doctor/physician. |
P332 + P313 | IF SKIN irritation occurs: Get medical advice/attention. |
P333 + P313 | IF SKIN irritation or rash occurs: Get medical advice/attention. |
P335 + P334 | Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages. |
P337 + P313 | IF eye irritation persists: Get medical advice/attention. |
P342 + P311 | IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician. |
P370 + P376 | In case of fire: Stop leak if safe to Do so. |
P370 + P378 | In case of fire: |
P370 + P380 | In case of fire: Evacuate area. |
P370 + P380 + P375 | In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion. |
P371 + P380 + P375 | In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion. |
Storage | |
Code | Phrase |
P401 | |
P402 | Store in a dry place. |
P403 | Store in a well-ventilated place. |
P404 | Store in a closed container. |
P405 | Store locked up. |
P406 | Store in corrosive resistant/ container with a resistant inner liner. |
P407 | Maintain air gap between stacks/pallets. |
P410 | Protect from sunlight. |
P411 | |
P412 | Do not expose to temperatures exceeding 50 oC/ 122 oF. |
P413 | |
P420 | Store away from other materials. |
P422 | |
P402 + P404 | Store in a dry place. Store in a closed container. |
P403 + P233 | Store in a well-ventilated place. Keep container tightly closed. |
P403 + P235 | Store in a well-ventilated place. Keep cool. |
P410 + P403 | Protect from sunlight. Store in a well-ventilated place. |
P410 + P412 | Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF. |
P411 + P235 | Keep cool. |
Disposal | |
Code | Phrase |
P501 | Dispose of contents/container to ... |
P502 | Refer to manufacturer/supplier for information on recovery/recycling |
Physical hazards | |
Code | Phrase |
H200 | Unstable explosive |
H201 | Explosive; mass explosion hazard |
H202 | Explosive; severe projection hazard |
H203 | Explosive; fire, blast or projection hazard |
H204 | Fire or projection hazard |
H205 | May mass explode in fire |
H220 | Extremely flammable gas |
H221 | Flammable gas |
H222 | Extremely flammable aerosol |
H223 | Flammable aerosol |
H224 | Extremely flammable liquid and vapour |
H225 | Highly flammable liquid and vapour |
H226 | Flammable liquid and vapour |
H227 | Combustible liquid |
H228 | Flammable solid |
H229 | Pressurized container: may burst if heated |
H230 | May react explosively even in the absence of air |
H231 | May react explosively even in the absence of air at elevated pressure and/or temperature |
H240 | Heating may cause an explosion |
H241 | Heating may cause a fire or explosion |
H242 | Heating may cause a fire |
H250 | Catches fire spontaneously if exposed to air |
H251 | Self-heating; may catch fire |
H252 | Self-heating in large quantities; may catch fire |
H260 | In contact with water releases flammable gases which may ignite spontaneously |
H261 | In contact with water releases flammable gas |
H270 | May cause or intensify fire; oxidizer |
H271 | May cause fire or explosion; strong oxidizer |
H272 | May intensify fire; oxidizer |
H280 | Contains gas under pressure; may explode if heated |
H281 | Contains refrigerated gas; may cause cryogenic burns or injury |
H290 | May be corrosive to metals |
Health hazards | |
Code | Phrase |
H300 | Fatal if swallowed |
H301 | Toxic if swallowed |
H302 | Harmful if swallowed |
H303 | May be harmful if swallowed |
H304 | May be fatal if swallowed and enters airways |
H305 | May be harmful if swallowed and enters airways |
H310 | Fatal in contact with skin |
H311 | Toxic in contact with skin |
H312 | Harmful in contact with skin |
H313 | May be harmful in contact with skin |
H314 | Causes severe skin burns and eye damage |
H315 | Causes skin irritation |
H316 | Causes mild skin irritation |
H317 | May cause an allergic skin reaction |
H318 | Causes serious eye damage |
H319 | Causes serious eye irritation |
H320 | Causes eye irritation |
H330 | Fatal if inhaled |
H331 | Toxic if inhaled |
H332 | Harmful if inhaled |
H333 | May be harmful if inhaled |
H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled |
H335 | May cause respiratory irritation |
H336 | May cause drowsiness or dizziness |
H340 | May cause genetic defects |
H341 | Suspected of causing genetic defects |
H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
Sorry,this product has been discontinued.
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