Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof

摘要

A novel process for the preparation of compounds of formula Iby aminolysis of a p-halophenyl alkyl ketone of formula IIwith a cyclic amine of formula IIIin water at a temperature of at least 130° C., in which formulae X is a halogen atom and R1, R2 and R3 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.