Process for preparing ketones
US4014889A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1975 |
| Grant date | Mar 29, 1977 |
| Priority date | — |
| Expiry date | Jun 11, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Ketones are prepared by reacting an aromatic or heterocyclic aldehyde in the presence of a cyanide ion with an unsaturated compound having the formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and are selected from the group of hydrogen, optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic, heterocyclic and carboxylic acid ester and PA1 R.sup.4 is nitrile (CN), --CO--R.sup.5 or --CO--OR.sup.5 wherein PA1 R.sup.5 is selected from the group of optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic and heterocyclic and PA1 R.sup.1 and R.sup.2 and/or R.sup.1 and R.sup.3 and/or R.sup.2 and R.sup.5 or R.sup.3 and R.sup.5 together with the carbon atoms to which they are attached as substituents may also form a carbocyclic or heterocyclic ring. Ketones prepared according to the process of the invention have the formula: ##STR2## wherein R.sup.1 .sup.' and R.sup.3 .sup.' are identical or different and are selected from the group of hydrogen, lower alkyl having up to 3 C-atoms and optionally substituted phenyl; and PA1 R.sup.6 .sup.' is optionally substituted phenyl or a pyridyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.