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CAS No. : | 1878-87-1 | MDL No. : | MFCD00016993 |
Formula : | C8H7NO5 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | TYHHDWAHJRRYCU-UHFFFAOYSA-N |
M.W : | 197.14 | Pubchem ID : | 15883 |
Synonyms : |
|
Num. heavy atoms : | 14 |
Num. arom. heavy atoms : | 6 |
Fraction Csp3 : | 0.12 |
Num. rotatable bonds : | 4 |
Num. H-bond acceptors : | 5.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 48.33 |
TPSA : | 92.35 Ų |
GI absorption : | High |
BBB permeant : | No |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -6.81 cm/s |
Log Po/w (iLOGP) : | 0.84 |
Log Po/w (XLOGP3) : | 0.97 |
Log Po/w (WLOGP) : | 1.06 |
Log Po/w (MLOGP) : | 0.03 |
Log Po/w (SILICOS-IT) : | -1.03 |
Consensus Log Po/w : | 0.37 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.56 |
Log S (ESOL) : | -1.73 |
Solubility : | 3.7 mg/ml ; 0.0188 mol/l |
Class : | Very soluble |
Log S (Ali) : | -2.5 |
Solubility : | 0.628 mg/ml ; 0.00318 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -1.3 |
Solubility : | 9.84 mg/ml ; 0.0499 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 2.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.11 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313 | UN#: | N/A |
Hazard Statements: | H315-H319 | 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 |
---|---|---|
With sodium hydroxide; iron(II) sulfate | ||
With iron; acetic acid | ||
With ethanol; platinum Hydrogenation; |
With palladium; acetic acid | ||
at 215℃; | ||
(electrochemical reduction); | ||
With palladium 10% on activated carbon; hydrogen In tetrahydrofuran for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With phosphorus pentachloride; toluene | ||
With thionyl chloride | ||
With thionyl chloride In ethyl acetate; benzene for 8h; Heating; |
With thionyl chloride | ||
With thionyl chloride In methanol; ethyl acetate for 7h; Heating; | ||
With thionyl chloride for 8h; Heating; | ||
With thionyl chloride In methanol; ethyl acetate; benzene for 8h; Heating; | ||
With thionyl chloride for 8h; Heating; | ||
With thionyl chloride for 2h; Heating; | ||
With thionyl chloride In chloroform for 6h; Heating; | ||
With thionyl chloride In chloroform Heating; | ||
With thionyl chloride Heating; | ||
With thionyl chloride | ||
With oxalyl dichloride In dichloromethane; N,N-dimethyl-formamide at 20℃; | ||
With thionyl chloride at 80℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With iron; acetic acid ensteht das Lactam der 2-Amino-phenoxyessigsaeure; | ||
With ammonia; iron(II) sulfate das Lactam entsteht; | ||
With 10% Pd/C; hydrogen In methanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With lithium hydroxide In tetrahydrofuran at 20℃; for 4h; | |
With concentrated alkali | ||
With sulfuric acid |
With sodium hydroxide; water In methanol | ||
With sodium hydroxide In water at 60℃; for 2h; | ||
With water; lithium hydroxide In tetrahydrofuran | 4.7 General procedure F for the hydrolysis of esters to acid General procedure: To the solution of acetate/propanoate in THF:H2O (1:1) was added 2.0 equiv of LiOH, and stirred for 2-3hrs. When the ester was fully consumed, THF was evaporated and aq.NaHCO3 was added and worked up with ethyl acetate. Organic layer was discarded and the pH of aqueous layer was adjusted to 2. Then the acid was extracted with ethyl acetate. Ethyl acetate extracts were dried over sodium sulfate and was concentrated to give off-white to white solids. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
77% | With sodium hydroxide In water at 110 - 120℃; for 3h; | |
70% | With sodium hydroxide for 0.0666667h; microwave irradiation; | |
With sodium hydroxide |
With sodium hydroxide In water Heating; | ||
With sodium hydroxide for 1h; Heating; | ||
With sodium hydroxide for 1h; Heating; | ||
With sodium hydroxide Heating; | ||
With potassium carbonate In acetone for 8h; Reflux; | ||
With sodium hydroxide |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98% | With trifluoroacetic acid In dichloromethane for 6h; | |
With trifluoroacetic acid In dichloromethane for 4h; | ||
139 mg | With trifluoroacetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane for 72h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With water; lithium hydroxide In tetrahydrofuran at 20℃; for 1h; | |
83% | Stage #1: 2-(2-nitrophenoxy)-acetic acid methyl ester With potassium carbonate In water at 65℃; Inert atmosphere; Stage #2: With hydrogenchloride In water at 20℃; Inert atmosphere; | General procedure for intermediate D1 - D40 General procedure: Compound C (0.1 mol), K2CO3 (0.15 mol) and water (50 mL) were added to a 100mL clean eggplant flask. After the reaction mixture was stirred for 5-10 h at 65 ,the reaction mixture was cooled to room temperature and was acidified with aqueous HCl solution (10%) to pH = 2-3. A white solid was afforded by filtration. After vacuum drying, product D was used in the next step. The analytical data corresponded to the literature [9-14]. |
With sodium hydroxide In water for 0.05h; microwave irradiation; |
With water; sodium hydroxide Microwave irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: K2CO3; KI; PEG-600 / dimethylformamide / 0.07 h / microwave irradiation 2: NaOH / H2O / 0.05 h / microwave irradiation | ||
Multi-step reaction with 2 steps 1: 1.) NaH / 1.) THF, RT, 0.5, 2.) THF, reflux, 7 d 2: 98 percent / TFA / CH2Cl2 / 6 h | ||
Multi-step reaction with 2 steps 1: potassium iodide; potassium carbonate / acetonitrile / 2 h / 80 °C 2: sodium hydroxide / water / 2 h / 60 °C |
Multi-step reaction with 2 steps 1.1: potassium carbonate / acetonitrile / 65 °C / Inert atmosphere 2.1: potassium carbonate / water / 65 °C / Inert atmosphere 2.2: 20 °C / pH 2 - 3 / Inert atmosphere | ||
Multi-step reaction with 2 steps 1: potassium carbonate; potassium iodide / acetone / Reflux 2: water; lithium hydroxide / tetrahydrofuran | ||
Multi-step reaction with 2 steps 1: potassium carbonate / acetone / 2 h / Reflux 2: lithium hydroxide; water / tetrahydrofuran / 1 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 48 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 80 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 50 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 56 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 58 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 67 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 88 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 54 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 48 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 41 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 48 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 80 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 56 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 50 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 57 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 58 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 52 percent / K2CO3 / dimethylformamide / 48 h / 70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 67 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 88 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 54 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 41 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 48 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 57 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 52 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 48 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 80 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 50 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 58 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 56 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 67 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 54 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 88 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 48 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 48 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h 7: 93 percent / 0.1 N aq. NaOH / tetrahydrofuran / 5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 80 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 41 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 48 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 80 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h 7: 81 percent / 0.1 N aq. NaOH / tetrahydrofuran / 5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 58 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 57 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 50 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 56 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h 7: 83 percent / 0.1 N aq. NaOH / tetrahydrofuran / 5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 56 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 8 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 56 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h 7: 82 percent / H2 / 5 percent Pd/C / methanol; tetrahydrofuran / 3 h / 760 Torr 8: 92 percent / 0.1 N aq. NaOH / tetrahydrofuran / 5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 58 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h 7: 86 percent / 0.1 N aq. NaOH / tetrahydrofuran / 5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 50 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h 7: 77 percent / 0.1 N aq. NaOH / tetrahydrofuran / 5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 56 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h 7: 82 percent / H2 / 5 percent Pd/C / methanol; tetrahydrofuran / 3 h / 760 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 67 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h 7: 86 percent / 0.1 N aq. NaOH / tetrahydrofuran / 5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 54 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 94 percent / EDC*HCl, DMAP / CH2Cl2 / 72 h / Ambient temperature 2: 91 percent / H2 / 5 percent Pd/C / methanol / 2.5 h / 760 Torr 3: 67 percent / K2CO3 / dimethylformamide / 48 h / 70 °C 4: pyridine / CH2Cl2 / 1 h / Ambient temperature 5: hydrazine monohydrate / ethanol; CHCl3 / Ambient temperature 6: 1.) THF, RT, 10 min, 2.) toluene, reflux, 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
52.3% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 20h; | 7.A Camptothecin-20-O-ester of 2-nitrophenoxyacetic acid (000411) The mixture of camptothecin (10 mg, 0.029 mmol), 2-nitrophenoxyacetic acid (8.2 mg, 0.042 mmol), EDCI (28 mg, 0.15 mmol), DMAP (2 mg, 0.02 mmol) and dichloromethane (3 ml) was stirred in the room temperature for 20 h, then dichloromethane (20 ml) was added to the solution. Organic layer was washed with water (20 ml), saturated NaHCO3 aqueous solution (10 ml) and brine (20 ml), and then dried over MgSO4. After the solvent was removed under reduced pressure, the resulting solid was separated by column chromatography (eluent: CHCl3:CH3OH 9:1) to afford 8.0 mg camptothecin-20-O-4-methoxyphenoxyacetate, yield: 52.3%, mp 232-234° C. The chemical structure analysis was performed by 1HNMR (CDCl3, 600 MHz): δ 8.41 (s, 1H, Ar-H), 8.26 (d, 1H, Ar-H), 7.95 (d, 2H, Ar-H), 7.85 (m, 2H, Ar-H), 7.69 (t, 1H, Ar-H), 7.55 (t, 1H, Ar-H), 7.20 (s, 1H, Ar-H), 7.08 (m, 2H, Ar-H), 5.68 (d, 1H, H17), 5.41 (d, 1H, H17), 5.29 (s, 2H, H5), 4.99 (q, 2H, OCH2CO), 2.25 (d, 2H, CH2), 0.98 (t, 3H, CH3). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 20h; | 5.A The reaction mixture of N-deacetylthiocolchicine (15 mg, 0.04 mmol), 2-nitrophenoxyacetic acid (15.8 mg, 0.08 mmol), EDCI (25 mg, 0.13 mmol), DMAP (2 mg, 0.2 mmol) and dichloromethane (3 ml) was stirred at room temperature for 20 h>Then dichloromethane (20 ml) was added. Organic layer was washed with H2O, 5% Na2CO3 and brine, and then dried over MgSO4. After the solvent was removed under vaccum, the residue was separated by column chromatography (eluent: ethyl acetate and petroleum ether) to afford 13 mg N-Deacetyl-N-(2-nitrophenoxyacetyl)thioclochicine, mp 242-244°(dec.). [0285] The chemical structure analysis was performed by HNMR (CDCl3, 600 MHz): δ 8.09 (d, 1H, Ar-H), 7.89 (d, 1H, Ar-H), 7.65 (t, 1H, Ar-H), 7.27 (d, 1H, H8), 7.18, 7.16 (m, 2H, NH and H12), 7.04 (t, 2H, H 11 and Ar-H), 6.56 (s, 1H, H4), 4.64 (m, 1H, H7), 4.66, 4.54 (dd, 2H, COCH2O). 3.95 (s, 3H, OCH3), 3.91 (s, 3H, OCH3), 3.67 (s, 3H, OCH3), 2.42 (s, 3H, SCH3), 2.60-1.26 (m, 4H, H5, 6). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1-hydroxy-7-aza-benzotriazole; N-ethyl-N,N-diisopropylamine; HATU; In N,N-dimethyl-formamide; at 20℃; | Example 62To a solution of 4- ( 4-pyridinyl) aniline (400 mg) , O- (7-azabenzotriazol-l-yl) -1,1,3, 3-tetramethyluronium hexafluorophosphate (1.34g), l-hydroxy-7-azabenzotriazole (480 mg) and (2-nitrophenoxy) acetic acid (695 mg) in JV, W-dimethylformamide (10 ml) was added JV, N-diisopropylethylamine (1.3ml), which was stirred overnight EPO <DP n="84"/>at ambient temperature . The reaction mixture was poured into water-(30 ml) and stirred for 30 minutes. Insoluble material was collected, washed with water, dried and purified by column chromatography on silica gel (gradient, CHCl3, 10% MeOH in CHCl3) . The aliquots of obtained product (100 mg) and 10% palladium on carbon (50% wet, 30 mg) in N, itf-dimethylformamide (10 ml) was stirred at ambient temperature for 3 hours under an atmospheric pressure of hydrogen. The catalyst was removed and evaporated under reduced pressure. The resultant was purified by column chromatography on silica gel (gradient, CHCl3, 10% MeOH in CHCl3) , which was recrystallized from EtOH to give 2- (2-aminophenoxy) -N- [4- (4-pyridinyl ) phenyl] acetamide (30 mg) as an off-white powder. IH-NMR (DMSO-dbeta) : delta4.67 (2H, s), 5.07 (2H, s), 6.45.-5.57 (IH, m) , 6.63-6.90 (3H, m) , 7.11 (2H, dd, J = 1.6, 4.6 Hz) , 7.83 (4H, s), 8.61 (2H, dd, J = 1.6, 4.6 Hz), 10.17 (IH, s) MS (ESI, m/z) : 342 (M+Na) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
53% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide In tetrahydrofuran at 20℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide In tetrahydrofuran at 20℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide In tetrahydrofuran at 20℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | Stage #1: 2-nitrophenoxyacetic acid; C16H14N2O With hydrogenchloride In water Reflux; Stage #2: With sodium carbonate In water |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | With trichlorophosphate at 90℃; for 8h; | 1.1 5.2 General procedure for the syntheses of 3-tert-butyl-7-(aryloxymethyl)-4H-[1,3,4]thiadiazolo[2,3-c][1,2,4]triazin-4-ones (5a-5n) General procedure: An equimolar mixtures of 4-amino-6-tert-butyl-3-mercapto-1,2,4-triazine-5(H)-one (0.01mol) (3) and substituted aryloxyacetic acids (0.01mol) (4) were condensed in presence of POCl3 at 90°C, for 8h. The reactions were carried out in dry condition. The reaction mixtures were cooled and poured into crushed ice drop wise with vigorous shaking, yielded solid product, filtered and recrystallized from ethanol to afford analytical samples (5a-5n) (Scheme 2). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride In water | 2.1 Synthesis of phenoxyacetic acid and ring-substituted phenoxyacetic acids General procedure: General procedure: To a solution of phenol or ring-substituted phenol (20 mmol) in water (20 mL) was added sodium chloroacetate (22 mmol) at rt. The mixture was heated and stirred at reflux for 8 h. The reaction mixture was cooled and the pH was adjusted to a value of 1.0 with 5 N HCl. The solution was filtered and the obtained solid was recrystallized from dehydrated ethanol to afford the pure product. 2-Nitrophenoxyacetic acid (1i) Following the general procedure the compound 1i was obtained in 29 % yield as a white solid. m.p. 160-162 °C. 1H NMR (400 MHz, CDCl3) δ 7.99 (dd, J =8.2, 1.6 Hz, 1H), 7.66-7.57 (m, 1H), 7.24-7.14 (m, 1H), 7.07 (d, J = 7.8Hz, 1H), 4.83 (s, 2H). MS (ESI) m/z: 196 [M-H]-. (S5) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | With triethylamine; 2-hydroxy-2-methylpropanenitrile; 1,1'-carbonyldiimidazole In dichloromethane at 25℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | With dmap; dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 12h; | General procedure for preparation of compoundsM1-M16 General procedure: Fibiric acids derivatives L1-L16 (0.015 mol), podophyllotoxin(0.01 mol), 4-dimethyaminopyridine (DMAP) (0.001mol) and N,N-dicyclohexylcarbodiimide (DCC) (0.02 mol)were dissolved in dichloromethane (30 mL) and stirred for12 h at room temperature. Then, a proper amount of silicagel were added and the solvent was condensed by vacuumconcentration. Finally, the target compounds were collectedby column chromatography (V(acetone): V(dichloromethane)= 1: 50). Chemical structures of the targetcompounds (M1-M16) were shown in Fig. 2. All the targetcompounds were reported for the first time. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99.7% | Stage #1: 2-nitrophenoxyacetic acid for 1h; Reflux; Alkaline conditions; Stage #2: triethanolamine hydrochloride Reflux; | General procedure for the synthesis of get(aryl)-chalcogenylacetates of tris(2-hydroxyethyl)ammonium (2-10). General procedure: A mixture of 0.01 mol of get(aryl)-chalogenylacetic acid and 0.01 mol of NaOH or KOH in 30 ml of methanol or ethanol was stirred at reflux for 1 h, then 0.01 mol of triethanolamine hydrochloride was added. The mixture was stirred for another 2-3 h, then cooled to 5-10°. The precipitate of NaCl or KCl was filtered off, the solvent was distilled off to obtain a solid product in the yield and purity of 99.7-99.8%. |
99.7% | Stage #1: 2-nitrophenoxyacetic acid for 1h; Alkaline conditions; Reflux; Stage #2: triethanolamine hydrochloride Alkaline conditions; | General procedure for the synthesis of get(aryl)-chalcogenylacetates of tris(2-hydroxyethyl)ammonium (2-10). General procedure: A mixture of 0.01 mol of get(aryl)-chalogenylacetic acid and 0.01 mol of NaOH or KOH in 30 ml of methanol or ethanol was stirred at reflux for 1 h, then 0.01 mol of triethanolamine hydrochloride was added. The mixture was stirred for another 2-3 h, then cooled to 5-10°C. The precipitate of NaCl or KCl was filtered off, the solvent was distilled off to obtain a solid product in the yield and purity of 99.7-99.8 %. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
79.6% | Stage #1: (1S,2S,3a1S,12bS)-2-((tert-butyldimethylsilyl)oxy)-2,3a1,4,5,7,12b-hexahydro-1H-[1,3]dioxolo[4,5-j]pyrrolo[3,2,1-de]phenanthridin-1-ol; 2-nitrophenoxyacetic acid With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; Stage #2: With tetrabutyl ammonium fluoride In tetrahydrofuran at 20℃; | 17 Example 17: 1- (4-nitro-phenoxyacetyl) -lycorine (17) 17-a: Put 2-TBS-lycoline (1.0 mmol), 4-nitro-phenoxyacetic acid (1.2 mmol), EDCI (1.2 mmol), DMAP (0.12 mmol), 15 ml of dichloromethane in 50 ml In the reaction flask, stir at room temperature until no raw material remains. Transfer to a separatory funnel, add 50 ml of dichloromethane, wash the organic phase with saturated sodium bicarbonate solution, water, and saturated sodium chloride solution, dry over anhydrous sodium sulfate, and concentrate for later use.17-b: Put the above product, TBAF (2.0 mmol), 15 ml of THF, into a 50 ml reaction flask, and stir at room temperature until no raw materials remain. Transfer to a separatory funnel, add 50 ml of dichloromethane, wash the organic phase with saturated sodium bicarbonate solution, water, and saturated sodium chloride solution, dry over anhydrous sodium sulfate, concentrate, and separate by column chromatography to obtain a green solid (79.6% ). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
60% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; Inert atmosphere; | General procedure for intermediate E1 - E40 General procedure: In the presence of DMAP as the catalyst to speed up the reaction, substituted 1,3-cyclohexanediones or substituted 1,3-dimethyl-1H-pyrazol-5-ol (0.1 mol), EDCI (0.1mol), anhydrous dichloromethane (DCM) (30 mL) and compound D (0.1 mol) wereadded to a 50 mL eggplant-shaped. The solution was stirred for 5-8 h. The progress ofthe reaction was monitored by TLC. After completion of the reaction, DCM was removed from the system under reduced pressure. Residues were purified via flashchromatography (Vethylacetate: Vpetroleumether =1:3) to afford the enol ester. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; Inert atmosphere; | General procedure for intermediate E1 - E40 General procedure: In the presence of DMAP as the catalyst to speed up the reaction, substituted 1,3-cyclohexanediones or substituted 1,3-dimethyl-1H-pyrazol-5-ol (0.1 mol), EDCI (0.1mol), anhydrous dichloromethane (DCM) (30 mL) and compound D (0.1 mol) wereadded to a 50 mL eggplant-shaped. The solution was stirred for 5-8 h. The progress ofthe reaction was monitored by TLC. After completion of the reaction, DCM was removed from the system under reduced pressure. Residues were purified via flashchromatography (Vethylacetate: Vpetroleumether =1:3) to afford the enol ester. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
57% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; Inert atmosphere; | General procedure for intermediate E1 - E40 General procedure: In the presence of DMAP as the catalyst to speed up the reaction, substituted 1,3-cyclohexanediones or substituted 1,3-dimethyl-1H-pyrazol-5-ol (0.1 mol), EDCI (0.1mol), anhydrous dichloromethane (DCM) (30 mL) and compound D (0.1 mol) wereadded to a 50 mL eggplant-shaped. The solution was stirred for 5-8 h. The progress ofthe reaction was monitored by TLC. After completion of the reaction, DCM was removed from the system under reduced pressure. Residues were purified via flashchromatography (Vethylacetate: Vpetroleumether =1:3) to afford the enol ester. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
63% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; Inert atmosphere; | General procedure for intermediate E1 - E40 General procedure: In the presence of DMAP as the catalyst to speed up the reaction, substituted 1,3-cyclohexanediones or substituted 1,3-dimethyl-1H-pyrazol-5-ol (0.1 mol), EDCI (0.1mol), anhydrous dichloromethane (DCM) (30 mL) and compound D (0.1 mol) wereadded to a 50 mL eggplant-shaped. The solution was stirred for 5-8 h. The progress ofthe reaction was monitored by TLC. After completion of the reaction, DCM was removed from the system under reduced pressure. Residues were purified via flashchromatography (Vethylacetate: Vpetroleumether =1:3) to afford the enol ester. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In N,N-dimethyl-formamide at 0 - 20℃; Inert atmosphere; | 4.2 General procedures for the synthesis Psammalin inspired libraries general procedure A for the preparation of cystamine conjugates General procedure: To the solution of appropriate acid (1 equiv) in dry DMF was added to freshly prepared cystamine (0.495 equiv) at 0°C followed by EDCI.HCl (1.1 equiv) and HOBt (1.1 equiv) under nitrogen. Later Et3N (3.0 equiv) was added drop-wise at same temp. The resulting mixture was shifted to RT and stirred overnight. Organic layer was partitioned between saturated LiCl solution and EtOAc. Organic layer dried over Na2SO4 was concentrated and column chromatography was performed. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 2-hydroxy-pyridine N-oxide; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl acetamide at 60℃; for 18h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 2-hydroxy-pyridine N-oxide; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl acetamide at 60℃; for 18h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
60% | Stage #1: 2-nitrophenoxyacetic acid With phenylsilane; potassium-t-butoxide; C22H30ClN2RuS2(1+)*Cl(1-) In tetrahydrofuran at 60℃; for 18h; Inert atmosphere; Stage #2: With water monomer; caesium fluoride In tert-butyl methyl ether at 20℃; for 3h; Inert atmosphere; | 2-(2-Nitro-phenoxy)-ethanol (4f): To a stirred suspension of (2-nitro-phenoxy)-aceticacid (3f) (500 mg, 2.5105 mmol,1equiv.) in degassed THF (10 V) was added ARP-03 (26.3 mg, 0.050 mmol, 2 mol%)and again degassed for 10 minutes. After 10 minutes of degassing, PhSiH3 (0.94mL, 7.5315 mmol, 3 equiv.) and t-BuOK (1 M in THF) (0.25 mL, 0.2510 mmol, 10mol%) were added dropwise to reaction mixture at RT. The reaction mixture washeated to 60°C and stirred for 18 h. The reaction mixture was then evaporatedto remove volatiles, then suspended in MTBE and stirred with aq. CsF solution(10%, 10 V) for 3 h. The organic layer was then separated and concentrated invacuum to furnish the crude, which was purified by column chromatography on silica gel (eluent:Ethyl acetate / n-hexane = 1/4) to afford 2-(2-nitro-phenoxy)-ethanol (4f) (279 mg, 60%) as a brown oil. 1H NMR (400 MHz, DMSO- d6): 7.90 - 7.75 (m, 1H), 7.65 - 7.55 (m, 1H), 7.45 - 7.30 (m,1H), 7.15 - 7.05 (m, 1H), 4.87 (t, J= 5.6 Hz, 1H), 4.14 (t, J = 4.8 Hz,2H), 3.75 - 3.60 (m, 2H).13C NMR (100 MHz, DEPT - 135, CDCl3): δ 152.38 (C), 140.04 (C),134.52 (CH), 127.80 (CH), 125.94 (CH), 121.04 (CH), 71.44 (CH2),61.04 (CH2).LCMS (EI, m/z) calcd for C8H9NO4[M + Na]: 206.17 Found: 206.1 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | Stage #1: 2-nitrophenoxyacetic acid With phenylsilane; potassium-t-butoxide; C22H30ClN2RuS2(1+)*Cl(1-) In tetrahydrofuran; 1,4-dioxane at 100℃; for 18h; Inert atmosphere; Stage #2: With water monomer; caesium fluoride In tert-butyl methyl ether at 20℃; for 3h; Inert atmosphere; | 3,4-Dihydro-2H-benzo[1,4]oxazine (6): To a stirred suspension of (2-nitro-phenoxy)-aceticacid (3f) (500 mg, 2.5105 mmol,1equiv.) in degassed 1,4-dioxane (10 V) was added ARP-03 (26.3 mg, 0.0502 mmol,2 mol%) and again degassed for 10 minutes. After 10 minutes of degassing, PhSiH3(1.56 mL, 12.5525 mmol, 5 equiv.) and t-BuOK (1 M in THF) (0.25 mL,0.2510 mmol, 10 mol%) were added dropwise to reaction mixture at RT. Thereaction mixture was heated to 100°C and stirred for 18 h. The reaction mixturewas then evaporated to remove volatiles, then suspended in MTBE and stirred withaq. CsF solution (10%, 10 V) for 3 h. The organic layer was then separated andconcentrated in vacuum to furnish the crude, which was purified by columnchromatography on silica gel (eluent: Ethyl acetate / n-hexane = 1 /4) to afford 3,4-dihydro-2H-benzo[1,4]oxazine (6) (213 mg, 62%) as a brown oil.1HNMR (400 MHz, CDCl3): δ 6.85 - 6.70 (m, 2H), 6.70 - 6.50 (m, 2H), 4.35 - 4.20 (m,2H), 3.50 - 3.40 (m, 2H).13CNMR (100 MHz, DEPT - 135, CDCl3): δ 144.22 (C), 133.72 (C),121.39 (CH), 118.98 (CH), 116.84 (CH), 115.75 (CH), 65.31 (CH2),41.08 (CH2).LCMS (EI, m/z) calcd for C8H9NO [M + H]: 136.17 Found: 136.11. |
Tags: 1878-87-1 synthesis path| 1878-87-1 SDS| 1878-87-1 COA| 1878-87-1 purity| 1878-87-1 application| 1878-87-1 NMR| 1878-87-1 COA| 1878-87-1 structure
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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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