METHOD FOR PREPARING 1,2,5-TRIMETHYL-4-PHENYL-4-PROPIONYLOXYPIPERIDINE HYDROCHLORIDE (PROMEDOL)
FIELD: chemistry of heterocyclic compounds, chemical technology, pharmacy. ^ SUBSTANCE: invention relates to a method for preparing 1,2,5-trimethyl-4-phenyl-4-propionyloxypiperidine hydrochloride (promedol) used extensively as an analgetic medicinal agent. Method involves reaction of 1,2,5-trimethyl...
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| creator | PRONIN I.M SHMAKOV A.N BARANOV JU.I LUKASHOV O.I SVETLOVA L.M |
| description | FIELD: chemistry of heterocyclic compounds, chemical technology, pharmacy. ^ SUBSTANCE: invention relates to a method for preparing 1,2,5-trimethyl-4-phenyl-4-propionyloxypiperidine hydrochloride (promedol) used extensively as an analgetic medicinal agent. Method involves reaction of 1,2,5-trimethylpiperidone-4 with aromatic compound of alkaline or earth-alkaline metal that is carried out at temperature from -10°C to -100°C and wherein 1-1.15 mol of aromatic compound of alkaline or earth-alkaline metal, in particular, phenyllithium or phenylmagnesium bromide is used per 1 mol of 1,2,5-trimethylpiperidone-4 followed by two-fold treatment with propionyl chloride. Invention provides enhancing yield of promedol. ^ EFFECT: improved preparing method. ^ 5 cl, 8 ex |
| format | Patent |
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Method involves reaction of 1,2,5-trimethylpiperidone-4 with aromatic compound of alkaline or earth-alkaline metal that is carried out at temperature from -10°C to -100°C and wherein 1-1.15 mol of aromatic compound of alkaline or earth-alkaline metal, in particular, phenyllithium or phenylmagnesium bromide is used per 1 mol of 1,2,5-trimethylpiperidone-4 followed by two-fold treatment with propionyl chloride. 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Method involves reaction of 1,2,5-trimethylpiperidone-4 with aromatic compound of alkaline or earth-alkaline metal that is carried out at temperature from -10°C to -100°C and wherein 1-1.15 mol of aromatic compound of alkaline or earth-alkaline metal, in particular, phenyllithium or phenylmagnesium bromide is used per 1 mol of 1,2,5-trimethylpiperidone-4 followed by two-fold treatment with propionyl chloride. Invention provides enhancing yield of promedol. ^ EFFECT: improved preparing method. ^ 5 cl, 8 ex</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS |
| title | METHOD FOR PREPARING 1,2,5-TRIMETHYL-4-PHENYL-4-PROPIONYLOXYPIPERIDINE HYDROCHLORIDE (PROMEDOL) |
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