Patent ID: 6677457
Filing Date: 2004-01-13
Classification: C07D

Abstract:
A process for the preparation of a compound of the formula wherein R is as defined for the formula (II); m is 0 or 1; and X is halogen; which comprises reacting a compound of the formula in free form or salt form, whereinR is unsubstituted or substituted C1-C12alkyl, unsubstituted or substituted C2-C4alkenyl, unsubstituted or substituted C2-C4alkynyl, unsubstituted or substituted C3-C6-cycloalkyl, unsubstituted or substituted aryl, unsubstituted or substituted heterocyclyl being a five- to seven-membered monocyclic saturated or unsaturated moiety, that contains from one to three hetero atoms selected from the group consisting of N, O and S, or a bicyclic moiety that may contain either in one ring or in both rings one or more hetero atoms selected from the group consisting of N, O and S, or â€”SR6; R6 is unsubstituted or substituted C1-C12alkyl, unsubstituted or substituted C2-C4alkenyl, unsubstituted or substituted C2-C4alkynyl, unsubstituted or substituted C3-C6cycloalkyl, unsubstituted or substituted aryl or unsubstituted or substituted heterocyclyl being a five- to seven-membered monocyclic saturated or unsaturated moiety, that contains from one to three hetero atoms selected from the group consisting of N, O and S, or a bicyclic moiety that may contain either in one ring or in both rings one or more hetero atoms selected from the group consisting of N, O and S; and X1 is a leaving group; with a halogenating agent.