Patent ID: 7538229

Claim:
A process for the preparation of a compound of the formula and, where applicable, its E/Z-isomers, mixtures of E/Z-isomers and/or tautomers and acid addition products thereof, in each case in free form or in salt form, wherein R is unsubstituted or substituted C 1 -C 12 alkyl, unsubstituted or substituted C 2 -C 4 alkenyl, unsubstituted or substituted C 2 -C 4 alkynyl, unsubstituted or substituted C 3 -C 6 cycloalkyl, unsubstituted or substituted aryl, unsubstituted or substituted heteroaryl, or —SR 1 ; R 1 is unsubstituted or substituted C 1 -C 12 alkyl, unsubstituted or substituted C 2 -C 4 alkenyl, unsubstituted or substituted C 2 -C 4 alkynyl, unsubstituted or substituted cycloalkyl, unsubstituted or substituted aryl or unsubstituted or substituted heteroaryl; and X is a selected leaving group that is not halogen, said process comprising: a) reacting a compound of the formula or, where applicable, an E/Z-isomer, a mixture of E/Z-isomers and/or a tautomer thereof, in each case in free form or in salt form, wherein R is as defined for formula (I), with a water removing reagent.