Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof
US6191182A · kind A · utility
4Cited by
6References
1Claims
0Family size
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Key dates
| Filing date | Jun 10, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Jun 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/031
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel process for the preparation of compounds of formula I ##STR1## by aminolysis of a p-halophenyl alkyl ketone of formula II ##STR2## with a cyclic amine of formula III ##STR3## in water at a temperature of at least 130.degree. C., in which formulae X is a halogen atom and R.sub.1, R.sub.2 and R.sub.3 are as claimed in claim 1, as well as the novel compounds of formula I and their use for the preparation of photoinitiators for the photopolymerisation of ethylenically unsaturated compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.