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CAS No. : | 17022-31-0 | MDL No. : | MFCD00870991 |
Formula : | C10H20O2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WIKWUBHEBLFWHH-UHFFFAOYSA-N |
M.W : | 172.26 | Pubchem ID : | 83946 |
Synonyms : |
|
Num. heavy atoms : | 12 |
Num. arom. heavy atoms : | 0 |
Fraction Csp3 : | 0.9 |
Num. rotatable bonds : | 7 |
Num. H-bond acceptors : | 2.0 |
Num. H-bond donors : | 0.0 |
Molar Refractivity : | 51.47 |
TPSA : | 26.3 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -4.99 cm/s |
Log Po/w (iLOGP) : | 3.09 |
Log Po/w (XLOGP3) : | 3.32 |
Log Po/w (WLOGP) : | 2.77 |
Log Po/w (MLOGP) : | 2.58 |
Log Po/w (SILICOS-IT) : | 2.61 |
Consensus Log Po/w : | 2.87 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -2.54 |
Solubility : | 0.5 mg/ml ; 0.0029 mol/l |
Class : | Soluble |
Log S (Ali) : | -3.55 |
Solubility : | 0.0487 mg/ml ; 0.000283 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -2.8 |
Solubility : | 0.274 mg/ml ; 0.00159 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.83 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P210-P264-P280-P302+P352-P321-P332+P313-P362-P370+P378-P403+P235-P501 | UN#: | N/A |
Hazard Statements: | H227-H315 | Packing Group: | N/A |
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 |
---|---|---|
With hydrogenchloride | ||
With sulfuric acid at 80℃; for 0.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With ethanol; sodium at 100 - 110℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sulfuric acid Heating; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydroxide In ethanol | ||
With sodium hydroxide In methanol; water for 3h; Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium In xylene |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With nickel In ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
at 25 - 55℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | Stage #1: ethyl 2-propylpentanoate With lithium diisopropyl amide In tetrahydrofuran; cyclohexane at -78 - 20℃; for 2h; Stage #2: carbon disulfide In tetrahydrofuran; cyclohexane at -78℃; for 1h; Stage #3: methyl iodide In tetrahydrofuran; cyclohexane at -78 - 2℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-fluorobis(benzenesulfon)imide Alkaline hydrolysis; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: LDA / tetrahydrofuran; cyclohexane / 2 h / -78 - 20 °C 1.2: tetrahydrofuran; cyclohexane / 1 h / -78 °C 1.3: 90 percent / tetrahydrofuran; cyclohexane / -78 - 2 °C 2.1: 30 percent / BrF3 / CCl3F / 0 °C | ||
Multi-step reaction with 3 steps 1.1: LDA / tetrahydrofuran; cyclohexane / 2 h / -78 - 20 °C 1.2: tetrahydrofuran; cyclohexane / 1 h / -78 °C 1.3: 90 percent / tetrahydrofuran; cyclohexane / -78 - 2 °C 2.1: 55 percent / BrF3 / CCl3F / 0 °C 3.1: 75 percent / HCl; HF; EtOH / H2O / 10 h / 100 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: LDA / tetrahydrofuran; cyclohexane / 2 h / -78 - 20 °C 1.2: tetrahydrofuran; cyclohexane / 1 h / -78 °C 1.3: 90 percent / tetrahydrofuran; cyclohexane / -78 - 2 °C 2.1: 55 percent / BrF3 / CCl3F / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 1.) 1.6 M n-butyllithium / 1.) diethyl ether, hexane, -78 deg C, 30 min, 2.) diethyl ether, a) -> room temperature, b) 1 h, reflux 2: 75 percent / p-toluenesulfonic acid / toluene / 14 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 1.) 1.6 M n-butyllithium / 1.) diethyl ether, hexane, -78 deg C, 30 min, 2.) diethyl ether, a) -> room temperature, b) 1 h, reflux 2: 75 percent / p-toluenesulfonic acid / toluene / 14 h / Heating 3: 1.) Mg, 2.) CuCl2 / 1.) THF, 1,2-dibromoethane, 6 h, reflux, 2.) THF, 14 h, reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 0.5 h / -10 °C 1.2: 1 h / -10 - 0 °C 2.1: potassium carbonate / N,N-dimethyl-formamide / 0.5 h / 20 °C 2.2: 12 h / -10 - 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: ethyl 2-propylpentanoate With N-ethyl-N,N-diisopropylamine In dichloromethane at -10℃; for 0.5h; Stage #2: carbonochloridic acid 1-chloro-ethyl ester In water at -10 - 0℃; for 1h; | 2 Step-2: Synthesis of Compound 5 DCM (1.8 ml) was added N,N-diisopropylethylamine (2.0 mmol) at -40° C. and stirred at same temperature for 30 mm, followed by drop wise addition of 1 -chloroethylchloroformate 4 (1.1 mmol) at the same temperature and the reaction mixture was allowed to stir for 1 h at 00 C. On completion of the reaction (monitored by TLC), the reaction mixture the solvent was evaporated and the crude was purified through column to get compound 5. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
3.1 g | With sodium hydroxide In water at 80℃; for 20h; | 1 Step-i: Synthesis of Compound 3 To this mixture comprising the of ethyl 2,2-dipropylacetoacetate, a solution of 8 g (0.2 moles) of NaOH in iO mlwas added and the resulting mixture lefi to react at 80° C.hours. This end mixture was diluted with water andextracted with DCM. Following the separation of layers thephase was acidified to P”=i with 33% HC1 andextracted three times with ethyl acetate. The ethyl acetatewas dried over Na2504 and concentrated to drynessyielding 3.i g of compound 3. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sodium hydroxide / methanol; water / 3 h / Reflux 2: chlorinating agent / dichloromethane / 0 °C 3: dichloromethane / 1.17 h / 0 - 20 °C / Alkaline conditions 4: hydroxylamine; sodium hydroxide / methanol; water / 0.75 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: sodium hydroxide / methanol; water / 3 h / Reflux 2: chlorinating agent / dichloromethane / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sodium hydroxide / methanol; water / 3 h / Reflux 2: chlorinating agent / dichloromethane / 0 °C 3: dichloromethane / 1.17 h / 0 - 20 °C / Alkaline conditions |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: ethyl n-valerate With lithium pyrrolide In tert-butyl methyl ether at -40℃; for 3h; Inert atmosphere; Large scale; Stage #2: propyl bromide In tert-butyl methyl ether at -30℃; Large scale; | 1.1; 2.1; 3.1 Preparation of compound II 3kg of ethyl valerate (compound I) was dissolved in 24kg of methyltetrahydrofuran, cooled to -40°C under nitrogen protection, and then 13.85kg (17.31L, density 0.8kg/L) 2mol/L lithium pyrrole was added dropwise The methyl tert-butyl ether solution of the reagent was added dropwise. After stirring for 3 hours, the temperature of the reaction system was controlled at -30°C, 3.97kg of bromopropane was added dropwise, and the raw material was sampled to detect the reaction. After the reaction, 8kg of 10 % Ammonium chloride solution terminates the reaction. After standing for 30 minutes, the aqueous phase is separated; the organic phase is washed once with 5 kg of saturated brine; the aqueous phase is separated and the organic solvent is concentrated under reduced pressure to obtain compound II. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87.2% | With methanol; sodium hydroxide for 9h; Reflux; Large scale; | 1.2; 2.2; 3.2 Preparation of compound III The compound II obtained in the first step was dissolved in 21 kg of methanol, added 7.7 kg of 30% sodium hydroxide solution, heated to reflux and reacted for 9 hours; after the reaction was completed, it was cooled to room temperature and concentrated under reduced pressure (removing most of the content in the reactor) Methanol), add 24kg of isopropyl acetate, then adjust the pH of the aqueous phase to 1-2 with concentrated hydrochloric acid, separate the aqueous phase, and then wash the organic phase twice with saturated sodium chloride solution, and dry the organic phase with sodium sulfate After drying, filter off sodium sulfate; to the filtrate, slowly add 2.54kg 40% sodium hydroxide solution, then concentrate under reduced pressure to remove all organic solvents and water, then add 26kg isopropyl acetate, and heat to dissolve After clarification, press and filter while hot. When the filtrate is slowly reduced to room temperature, a large amount of white solid is precipitated. The white solid is filtered out and dried under reduced pressure at 50°C to obtain 3.71kg of sodium valproate (compound III) Crude product: The above 3.71kg crude sodium valproate is heated to dissolve with 28kg isopropyl acetate, 0.16kg of pharmaceutical grade activated carbon is added, and filtered while hot, when the filtrate is slowly reduced to room temperature, a large amount of white solid precipitates out. The solid was filtered out and dried under reduced pressure at 50°C to obtain 3.34 kg of refined sodium valproate. Taking ethyl valerate (compound I) as the standard, the total molar yield is 87.2%, and the purity of the final product is 99.7%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | Stage #1: n-butyllithium With diisopropylamine In tetrahydrofuran; hexane at 0℃; for 0.5h; Inert atmosphere; Stage #2: ethyl 2-propylpentanoate In tetrahydrofuran; hexane at 0℃; for 0.5h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sulfuric acid at 85℃; Cooling with ice; | 19 (1) Preparation of Valpromide General procedure: 25.04g of valprolonitrile and 25.63g of methanol, in an ice bath, add 39.23g of concentrated sulfuric acid dropwise with stirring, stir at 85°C for 6h, add 100ml of water, stir, adjust pH to 8 with sodium hydroxide solution, extract with ethyl acetate, anhydrous Drying with sodium sulfate, suction filtration, rotary evaporation, and drying to obtain a solid-liquid mixture, add 150 ml of petroleum ether, stir for 0.5 h, let stand overnight, suction filtration, wash with petroleum ether, and the filtrate is processed according to step (2); the white solid is dried to obtain 6.95 g of valpromide, yield 24.3% (calculated as valproic nitrile); melting point 125.5-126°C. |
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