The invention provides a simple, efficient, environmental friendly catalytic system for the direct carboxylation reaction using CO
2
under mild condition. A single step heterogeneous catalytic process for preparation of alkynyl carboxylic acids of formula I is disclosed.
该发明提供了一种简单、高效、环保的催化体系,可在温和条件下利用
二氧化碳进行直接羧化反应。揭示了一种用于制备式I的炔基
羧酸的单步异质催化过程。