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CAS No. : | 3514-15-6 | MDL No. : | MFCD06801062 |
Formula : | C11H14N2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 174.24 g/mol | Pubchem ID : | - |
Synonyms : |
|
Num. heavy atoms : | 13 |
Num. arom. heavy atoms : | 9 |
Fraction Csp3 : | 0.27 |
Num. rotatable bonds : | 2 |
Num. H-bond acceptors : | 1.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 55.77 |
TPSA : | 16.96 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) : | -6.07 cm/s |
Log Po/w (iLOGP) : | 2.29 |
Log Po/w (XLOGP3) : | 1.82 |
Log Po/w (WLOGP) : | 1.75 |
Log Po/w (MLOGP) : | 1.55 |
Log Po/w (SILICOS-IT) : | 1.94 |
Consensus Log Po/w : | 1.87 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -2.45 |
Solubility : | 0.622 mg/ml ; 0.00357 mol/l |
Class : | Soluble |
Log S (Ali) : | -1.8 |
Solubility : | 2.79 mg/ml ; 0.016 mol/l |
Class : | Very soluble |
Log S (SILICOS-IT) : | -3.69 |
Solubility : | 0.036 mg/ml ; 0.000207 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.54 |
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P330-P332+P313-P337+P313-P362-P403+P233-P405-P501 | UN#: | |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
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* 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 |
---|---|---|
93% | With sodium hydroxide; LiAlH4 In tetrahydrofuran; methanol; water | 1.c Preparation of 1-methyl-2-(methylaminomethyl)-1 H -indole c) 1-Methyl-2-(methylaminomethyl)-1H-indole A 3-liter 3-necked roundbottom flask equipped with overhead stirring was charged with N,1-dimethyl-1H-indole-2-carboxamide (23.45 g, 124.58 mmole) and anhydrous THF (170 mL). The solution was stirred while a solution of LiAlH4 in THF (1.0 M, 250 mL, 250 mmole) was added via syringe. Gas was evolved during the addition of the first 50 mL of LiAlH4 solution. When the addition was complete, the resulting light yellow solution was heated at gentle reflux. After 23 hr, the reaction was cooled in ice and quenched by the sequential dropwise addition of H2O (9.5 mL), 15% NaOH (9.5 mL), and H2O (28.5 mL). The mixture was stirred for 15 min, then was filtered through celite, and the filter pad was washed thoroughly with THF. The filtrate was concentrated and the residue was flash chromatographed on silica.gel (10% MeOH/CHCl3 containing 0.5% cone. NH4OH). The title compound (20.17 g, 93%) was obtained as a light yellow oil: 1H NMR (300 MHz, CDCl3) δ 7.56 (d, J = 7.8 Hz, 1 H), 7.02 - 7.35 (m, 3 H), 6.38 (s, 1 H), 3.88 (s, 2 H), 3.75 (s, 3 H), 2.49 (s, 3 H). |
93% | With lithium aluminium tetrahydride In tetrahydrofuran for 23h; Heating / reflux; | 1.c Preparation 1; Preparation of 1-Methyl-2-(methylaminomethyl)indole; c) 1-Methyl-2-(methylaminomethyl)indole A 3-liter 3-necked roundbottom flask equipped with overhead stirring was charged with N,1-dimethylindole-2-carboxamide (23.45 g, 124.58 mmole) and anhydrous THF (170 mL). The solution was stirred while a solution of LiAlH4 in THF (1.0 M, 250 mL, 250 mmole) was added via syringe. Gas was evolved during the addition of the first 50 mL of LiAlH4 solution. When the addition was complete, the resulting light yellow solution was heated at gentle reflux. After 23 hr, the reaction was cooled in ice and quenched by the sequential dropwise addition of H2O (9.5 mL), 15% NaOH (9.5 mL). and H2O (28.5 mL). The mixture was stirred for 15 min, then was filtered through celite, and the filter pad was washed thoroughly with THF. The filtrate was concentrated and the residue was flash chromatographed on silica gel (10% MeOH/CHCl3 containing 0.5% conc. NH4OH). The title compound (20.17 g, 93%) was obtained as a light yellow oil: 1H NMR (300 MHz, CDCl3) δ 7.56 (d, J=7.8 Hz, 1H), 7.02-7.35 (m, 3H), 6.38 (s, 1H), 3.88 (s, 2H), 3.75 (s, 3H), 2.49 (s, 3H). |
93% | With lithium aluminium tetrahydride In tetrahydrofuran for 24h; Heating / reflux; | 1.c A 3-liter 3-necked roundbottom flask equipped with overhead stirring was charged with N,1-dimethylindole-2-carboxamide (23.4 g, 124.6 mmole) and anhydrous THF (170 mL). The solution was stirred while a solution of LiAlH4 in THF (1.0 M, 250 mL, 250 mmole) was added via syringe. Gas was evolved during the addition of the first 50 mL of LiAlH4 solution. When the addition was complete, the resulting light yellow solution was heated at gentle reflux. After 24 hr, the reaction was cooled in ice and quenched by the sequential dropwise addition of H2O (9.5 mL), 15% NaOH (9.5 mL), and H2O (28.5 mL). The mixture was stirred for 15 min, then was filtered through celite, and the filter pad was washed thoroughly with THF. The filtrate was concentrated and the residue was flash chromatographed on silica gel (10% MeOH/CHCl3 containing 5% conc. NH4OH). The title compound (20.2 g, 93%) was obtained as a light yellow oil: MS (EI) m/e 175 (M+H)+. |
80% | With lithium aluminium tetrahydride In tetrahydrofuran for 5h; Heating; | |
73% | With ammonium hydroxide; LiAlH4 In tetrahydrofuran; CHCl3/MeOH | 1.b b b 1-Methyl-2-(methylaminomethyl)indole To a solution of N,1-dimethylindole-2-carboxamide (23.3 g, 124.2 mmole) in dry THF (400 mL) was added LiAlH4 (1.0 M in THF, 250 mL, 250 mmole). The reaction solution was heated to 70° C. under argon for 36 hr with stirring. The resulting white cloudy solution was allowed to cool to RT and then was submitted to a basic work-up according to the procedure of Micovic and Mihailovic (Micovic, V. M.; M. L. J. J. Org. Chem. 1956, 18, 1190). Purification by chromatography on silica gel (5% NH4OH in 9:1 CHCl3/MeOH) afforded the titled compound (15.8 g, 73%) as a colorless oil: MS (ES) m/e 175 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | With <i>tert</i>-butylamine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | With <i>tert</i>-butylamine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With <i>tert</i>-butylamine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
entspr. Indolcarboxamid, LiAlH4; | ||
entspr. Carboxamid, LiAlH4; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine In dichloromethane; N,N-dimethyl-formamide for 16h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine In N,N-dimethyl-formamide |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
19% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine In N,N-dimethyl-formamide |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 18h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 18h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
89% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine In N,N-dimethyl-formamide |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
5% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine In N,N-dimethyl-formamide |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; for 16h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In dichloromethane; N,N-dimethyl-formamide for 18h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
89% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 12h; | |
89% | With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In DMF (N,N-dimethyl-formamide) at 20℃; for 12h; | 2 N-[(2-amino-5-{N-methyl-N-[(1-methylindol-2-yl)methyl]carbamoyl}phenyl)methyl]-N-methylacetamide Example 2 Preparation of N-[(2-amino-5-{N-methyl-N-[(1-methylindol-2-yl)methyl]carbamoyl}phenyl)methyl]-N-methylacetamide To a stirred solution of 4-amino-3-[(N-methylacetylamino)methyl]benzoic acid trifluoro acetate (0.73 g, 2.17 mmole), from Procedure 3, in DMF (20 ML) at RT was added diisopropylethyl amine (0.83 ml, 4.78 mmole), HOBt (0.32 g, 2.39 mmole), 1-methyl-2-(methylaminomethyl)indole (0.40 g, 2.39 mmole) and finally EDC (0.45 g, 2.39 mmole).. After 12 hr, the reaction contents were poured onto H2O (100 ML) and extracted with EtOAc (2*100 ML).. The organic phases were combined and sequentially washed with H2O (100 ML) and brine.. Drying over Na2SO4 and purification on silica (CHCl3/CH3OH. 95:5) afforded the title compound (0.73 g, 89%) as a light yellow solid: MS (ES) m/e 379 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
5.39 g | With sodium tetrahydroborate In ethanol for 4h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25% | With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 35℃; | 9 EDC (0.10 g, 0.52 mmol) was added to a solution of 3-(5,7,8,9-Tetrahydro-6-oxa- l,9-diaza-benzocyclohepten-3-yl)-acrylic acid hydrochloride (0.11 g, 0.43 mmol), HOBt (64 mg, 0.47 mmol), Methyl-(1 -methyl- lH-indol-2-ylmethyl)-amine (128 mg, 0.47 mmol) and (/-Pr)2EtN (0.36 mL, 2.15 mmol) in DMF (6 mL). The mixture was allowed to stir overnight at 35 0C. The mixture was cooled to 0 0C and diluted with H2O (15 mL) with rapid stirring. The resulting gummy precipitate was filtered, washed with H2O (30 mL) then with Et2O (20 mL). The solid was dissolved in dichloromethane (100 mL), washed with H2O(50 mL), brine (50 mL), dried over MgSO2 , and treated with charcoal. The mixture was filtered and the filtrate was passed through a plug of silica gel. The silica gel was washed with ethyl acetate (50 mL) then with 5% methanol: dichloromethane (50 mL). The combined organic fractions were concentrated to give an oil. The resulting oil was triturated with etheϖhexanes (20 mL) until the oil was converted to a beige solid. Yield: 40 mg (25%) as a mixture of amide rotamers; 1H NMR (400 MHz, DMSO-d6) δ 8.24 (br s, IH), 7.92 and 7.85 (2 x s, IH), 7.50 - 7.39 (m, 3H), 7.18 - 6.92 (m, 3H), 6.78 (br s, IH), 6.41 and 6.20 (2 x s, IH), 5.07 and 4.83 (2 x s, 2H), 4.52 and 4.45 (2 x s, 2H), 3.71 - 3.61 (m, 5H), 3.50 - 3.40 (m, 2H), 3.10 and 2.95 (2 x s, 3H); ESI MS m/z 311 [C22H24N4O2 + H]+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
42% | Stage #1: 3-(4-methyl-2,3,4,5-tetrahydro-1H-pyrido[2,3-e][1,4]diazepin-7-yl)-acrylic acid hydrochloride; 1-methyl-2-(methylaminomethyl)-1H-indole With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride at 40℃; Stage #2: With hydrogenchloride In diethyl ether Stage #3: With hydrogenchloride In diethyl ether; dichloromethane | 11 EDC (0.21 g, 1.1 mmol) was added to a suspension of methyl-(2-methyl- benzofuran-3-ylmethyl)-amine (158 mg, 0.9 mmol) and 3-(4-Methyl-2,3,4,5-tetrahydro- lH-pyrido[2,3-e][l,4]diazepin-7-yl)-acrylic acid hydrochloride (201 mg, 0.75 mmol). The mixture was allowed to stir overnight at 40 °C. The mixture was cooled to 0 0C and diluted with H2O (6OmL) with rapid stirring. The resulting precipitate was filtered, washed with H2O (20 mL) then dried under high vacuum. The solid was then subjected to flash chromatography on silicia gel using 5% methonakdichloromethane. The fractions were collected and treated with 5 mL of 2.0M HCL in Et2O. The suspension was concentrated, triturated with Et2O (50 Ml then filtered to give a coupled solid, were coupled. The resulting solid was dissolved in methylene chloride (5 mL) and treated with 2M HCl in ether (0.75 mL, 1.5 mmol). The yellow precipitate was filtered, triturated with diethyl ether and dried under high vacuum to afford the title compound as a white solid (138 mg, 42%). 1H NMR (300 MHz, DMSO-d6) 11.92 (bs, IH) 8.43-8.17 (m, 2H), 7.53- 7.38 (m, 3H), 7.29-6.98 (m, 3H), 6.40 (s, IH), 5.05-4.84 (m, 2H), 4.55-4.63 (m, IH), 4.31-4.38 (IH), 3.64-3.80 (m, 6H), 3.33-3.45 (m, IH), 2.97-2.93 (m, 2H) 2.82-2.79 (m, 3H); MS (ESI) m/e 390 (C23H27N5O + H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: hydroxybenzotriazole monohydrate; diisopropylethylamine; EDC / dimethylformamide / 12 h / 20 °C 2: 93 percent / NaHCO3 / tetrahydrofuran / 50 h / 60 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: methanol / 24 h / 20 °C 2: 5.39 g / NaBH4 / ethanol / 4 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 93 percent / diethyl ether; dioxane; H2O / 3 h / Ambient temperature 2: 80 percent / lithium aluminium hydride / tetrahydrofuran / 5 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | With triethylamine In dichloromethane for 2h; | 23.a a) N-Methyl-N-(l-methyl-lH-indol-2-yhnethyl)acrylamide; A solution of memyl-(l-methyl-lH-mdol-2-ylmethyl)amine (2.00 g, 11.5 mmol) in CH2Cl2 (100 mL) was treated with acryloyl chloride (1.03 mL, 12.7 mmol) followed by Et3N (1.8 mL, 13 mmol). After stirring for 2 h, the solution was diluted with CH2Cl2 (100 mL) and washed with saturated aqueous NaHCO3 (200 mL). The aqueous layer was extracted with CH2Cl2 (200 mL). The combined organic layers were dried over Na2SO4, filtered and concentrated to an orange oil. Purification by flash column chromatography (silica gel, CH2Cl2ZMeOH, 99.5:0.5 to 99:1) gave the title compound (2.10 g, 80%) as a tan oil: 1H NMR (300 MHz, CDCl3) δ 7.59-7.56 (m, IH), 7.32-7.19 (m, 2H)5 7.13-7.08 (m, IH), 6.66-6.57 (m, IH), 6.47-6.38 (m, 2H), 5.78-5.74 (m, IH), 4.88^.74 (m, 2H), 3.69 (s,3H), 3.06-2.97 (m, 3H); MS (ESI) m/e 229 (M + H)+. |
76% | With triethylamine In dichloromethane at -78 - -30℃; for 0.5h; | 160.b b) N-METHYL-N-(L-METHYL-LH-INDOL-2-YLMETHYL)-ACRYLAMIDE Acryloyl chloride (5.13 mL, 63.1 mmol) was added dropwise to a stirred CH2C12 (100 mL) solution of methyl-(1-methyl-1H-indol-2-ylmethyl)-amine (10.0 g, 57.4 mmol) and triethylamine (12 mL, 86.1 mmol) AT-78 °C. The reaction mixture was warmed to-30 °C over 30 min and quenched with water. The reaction mixture was diluted with CH2C12 (100 mL), washed with dilute NAHC03, HCl and water, dried and evaporated to afford 9.91 g (76%) title COMPOUND.'H NMR (300 MHz, DMSO-D6) 8 7.44 (m, 2H), 7.12 (t, J= 7.2Hz, 1H), 7.00 (t, J= 7.2Hz, 1H), 6.81 (dd, J= 7.4 and 16.7Hz, 1H), 6.40 and 6.14 (rotamers, 2s, 1H), 6.20 (dd, J= 2.5 and 16.7Hz, 1H), 5.7 (m, 1H), 4.90 and 4.80 (rotamers, 2s, 2H), 3. 68 and 3.66 (rotamers, 2s, 3H), 3.00 and 2.96 (rotamers, 2s, 3H). MS (ESI) INULE : 229.1 (M+H) +. |
With triethylamine In dichloromethane | 76.a Preparation of (E)-N-methyl-N-(1-methyl-1 H -indol-2-ylmethyl)-3-[6-(phenylamino)pyridin-3-yl]acrylamide a) N-Methyl-N-(1-methyl-1H-indol-2-ylmethyl)acrylamide To a stirred solution of 1-methyl-2-(methylaminomethyl)-1H-indole (1.5 g, 8.6 mmole) and Et3N (1.35 mL, 9.6 mmole) in CH2Cl2 (75 mL) at 0 °C was added dropwise acryloyl chloride (0.77 mL, 9.5 mmole) over 5 minutes. After 2 h the reaction was washed with cold H2O, brine, dried (MgSO4) and concentrated under vacuum. The residue was used without further purification. |
3 g | With triethylamine In dichloromethane at -78℃; for 2h; | To a stirred solution of compound 2 (4g, 22.9mmol ) in DCM (40ml ) were added triethylamine (2.32 g, 22.9 mmol )and acryloyl chloride 2a ( 2g, 22.9mmol ) at -78°C and the total reaction mixture stirred at - 78°C for 2h . Water was added and warmed to room temperature. Reaction mixture was extracted with ethyl acetate, dried over sodium sulphate and concentrated under vacuum. Crude material was purified by eluting with 60% ethyl acetate in pet ether to get the desired compound A (3 g). MS(ESI): m/z229(M+H)+ |
3 g | With triethylamine In dichloromethane at -78℃; for 2h; | Synthesis of Intermediate A Step-2 [0026] To a stirred solution of compound 2 (4 g, 22.9 mmol) in DCM (40 ml) were added triethylamine (2.32 g, 22.9 mmol) and acryloyl chloride 2a (2 g, 22.9 mmol) at -78° C. and the total reaction mixture stirred at -78° C. for 2 h. Water was added and warmed to room temperature. Reaction mixture was extracted with ethyl acetate, dried over sodium sulphate and concentrated under vacuum. Crude material was purified by eluting with 60% ethyl acetate in pet ether to get the desired compound A (3 g). MS (ESI): m/z 229 (M+H)+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
37% | With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In DMF (N,N-dimethyl-formamide) at 20℃; | 8 Example 8; Preparation of N,2-Dimethyl-N-[(1-methyl-1H-indol-2-yl)methyl]benzamide; a) N,2-Dimethyl-N-[(1-methyl-1H-indol-2-yl)methyl]benzamide EDC (0.22 g, 1.15 mmole) was added to a solution of ortho-toluic acid (0.15 g, 1.10 mmole), 1-methyl-2-(methylaminomethyl)indole (0.20 g, 1.15 mmole), and HOBt.H2O (0.15 g, 1.11 mmole) in DMF at RT. The reaction was stirred overnight, then was concentrated in vacuo. The residue was diluted with 5% NaHCO3 and extracted with CH2Cl2. The combined organic extracts were washed with brine and dried over MgSO4. Flash chromatography on silica gel (20% EtOAc/hexanes) gave a colorless gum, which was triturated with Et2O to afford the title compound (0.2 g, 37%) as a white solid: 1H NMR (300 MHz, CDCl3) indicated an approximately 5:1 mixture of amide rotamers; for the major rotamer: δ 7.60 (d, J=7.7 Hz, 1H), 7.05-7.40 (m, 7H), 6.52 (s, 1H), 5.01 (s, 2H), 3.85 (s, 3H), 2.71 (s, 3H), 2.30 (s, 3H); for the minor rotamer: δ 7.60 (d, J=7.7 Hz, 1H), 7.05-7.40 (m, 7H), 6.44 (s, 1H), 4.52 (s, 2H), 3.50 (s, 3H), 3.14 (s, 3H), 2.37 (s, 3H); MS (ES) m/e 293 (M+H)+. Anal. Calcd for C19H20N2O.0.35H2O: C, 76.40; H, 6.99; N, 9.38. Found: C, 76.10; H, 6.83; N, 9.33 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
63% | With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In DMF (N,N-dimethyl-formamide) at 20℃; | Scheme I.a; 3.b Preparation 3; Preparation of 2-Bromo-N-methyl-N-[(1-methyl-1H-indol-2-yl)methyl]benzamide; a) 2-Bromo-N-methyl-N-[(1-methyl-1H-indol-2-yl)methyl]benzamide; Method II EDC (660 mg, 3.44 mmole) was added to a solution of 2-bromobenzoic acid (693 mg, 3.45 mmole), 1-methyl-2-(methylaminomethyl)indole (600 mg, 3.45 mmole), and HOBt.H2O (466 mg, 3.45 mmole) in DMF at RT. The reaction was stirred overnight, then was concentrated in vacuo. The residue was diluted with 5% NaHCO3 and extracted with CH2Cl2. The combined organic extracts were washed with brine and dried over MgSO4. Flash chromatography on silica gel (2% MeOH/CH2Cl2) gave the title compound (750 mg, 63%): MS (ES) m/e 357 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25% | With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In DMF (N,N-dimethyl-formamide) at 20℃; | 2 Example 2; Preparation of N-Methyl-N-[(1-methyl-1H-indol-2-yl)methyl]-2-phenylbenzamide; a) N-Methyl-N-[(1-methyl-1H-indol-2-yl)methyl]-2-phenylbenzamide EDC (0.22 g, 1.14 mmole) was added to a solution of 2-biphenylcarboxylic acid (0.22 g, 1.14 mmole), 1-methyl-2-(methylaminomethyl)indole (0.20 g, 1.15 mmole), and HOBt.H2O (0.15 g, 1.11 mmole) in DMF (20 mL) at RT. The reaction was stirred overnight, then was concentrated in vacuo. The residue was diluted with 5% NaHCO3 and extracted with CH2Cl2. The combined organic extracts were washed with brine and dried over MgSO4. Flash chromatography on silica gel (3% MeOH/CH2Cl2) followed by preparative TLC (3% MeOH/CH2Cl2) gave the title compound (0.10 g, 25%) as a light yellow solid: 1H NMR (360 MHz, CDCl3) indicated an approximately 5:1 mixture of amide rotamers; for the major rotamer: δ 7.03-7.58 (m, 13H), 6.19 (s, 1H), 4.50 -5.00 (m, 2H), 3.57 (s, 3H), 2.40 (s, 3H); for the minor rotamer: δ 7.03-7.58 (m, 13H), 6.14 (s, 1H), 4.50-5.00 (m, 2H), 3.38 (s, 3H), 2.76 (s, 3H); MS (ES) m/e 356 (M+H)+. Anal. Calcd for C24H22N2O.0.80H2O: C, 78.15; H, 6.45; N, 7.59. Found: C, 77.96; H, 6.29; N, 7.35. |
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