Heterogeneous catalytic carboxylation of terminal alkynes with CO2 over a copper(II)-based metal-organic framework catalyst

Heterogeneous catalytic carboxylation of terminal alkynes with CO2 over a copper(II)-based metal-organic framework catalyst

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Developing efficient, inexpensive and robust heterogeneous catalysts for CO2 conversion is greatly important.In this study, a new stable copper(II)-based metal-organic framework [Cu(Fbtx)2Br2]n Acrylic Desk Name Plate Block (denoted as CZU-7, CCDC-2165700, Fbtx = 1,4-bis(1,2,4-triazole-1-ylmethyl)-2,3,5,6-tetrafluorobenzene) was synthesized via a facile and fast microwave heating method.CZU-7 exhibits a two-dimensional layer structure with the 44-sql topology.

This material was demonstrated to be an efficient heterogeneous catalyst for the direct carboxylation of 1-ethynylbenzene with CO2, and various propiolic acids were synthesized in moderate Calcium D Glucarate to good yields under optimized reaction conditions.Moreover, the catalyst could be easily recovered and reused five times without significant loss of catalytic activity.