Process for preparing 2,2,6,6-tetramethyl-4-oxopiperidine
US4661597A · kind A · utility
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17Claims
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Key dates
| Filing date | Feb 14, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Feb 14, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D211/74
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is provided for the preparation of 2,2,6,6-tetramethyl-4-oxopiperidine, reacting acetone with 2,2,4,4,6-pentamethyl-2,3,4,5,-tetrahydropyrimidine in the presence of a catalytically effective amount of an organic carboxylic acid halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.