Patent ID: 9556141
Date: 2017-01-31
CPC Classifications: C07D

Claim:
1. A process for preparing a compound of formula (I): in which R each R R R R R R R R R m is 1 or 2, wherein, in the case of several occurrences, m may be identical or different; n is 0, 1 or 2; wherein, in the case of several occurrences, n may be identical or different; r is 0, 1, 2, 3 or 4; comprising i) deprotonating a compound of the formula (II) ii) subjecting the product obtained in step (i) to a carboxylation by reacting it with carbon dioxide or a carbon dioxide equivalent, to obtain a compound of formula (I-A): wherein M wherein the carboxylate compound of formula I-A is converted in a step (ii-a) to the corresponding carbonyl chloride compound of formula (I):