This invention relates to a novel carbonylation process for the production of aromatic carboxylic acids or esters of aromatic. More particularly, this invention relates to a process for the carbonylation of aromatic iodides or bromides with carbon monoxide in the presence of a palladium catalyst promoted with a Group VIB carbonyl and in the presence of an alcohol or water in a base reaction medium having a pKa greater than about 8. When the alcohol is used the product is the ester. When water is used the product is the carboxylic acid.
这项发明涉及一种用于生产芳香
羧酸或芳香酯的新型羰基化过程。更具体地说,这项发明涉及一种在存在
钯催化剂的情况下,通过碳一氧化物对芳香
碘化物或
溴化物进行羰基化的过程,同时在碱性反应介质中存在一种受VIB族羰基促进的
钯催化剂和醇或
水。当使用醇时,产物是酯。当使用
水时,产物是
羧酸。