摘要
CO_(2)fixation is important for reducing the greenhouse effect and improving clean energy use.While recent studies focus on converting CO_(2)to liquid fuels,direct fixation into high-value compounds like aromatic carboxylic acids provides an alternative path.Herein,we report a general electrochemical CO_(2)fixation to aromatic carboxylic acids via the CO_(2)^(·-)intermediate using a non-transition metal graphite electrode.Different from the conventional aromatic radical mechanism,in this report,CO_(2)will gain electrons on the graphite electrode to generate CO_(2)^(·-),which will further attack aromatic halides to obtain the desired aromatic carboxylic acid via an aromatic nucleophilic substitution mechanism.As CO_(2)^(·-)acts as the general intermediate,various aromatic compounds can be carbonylated without the need for a specific catalytic design to activate the aromatic halides.Furthermore,benefit from the CO_(2)^(·-)nucleophile,only the ipso-products can be obtained compared with the conventional approaches.This method offers a flexible way to convert the greenhouse gas CO_(2)into valuable aromatic carboxylic acids,which have applications in pharmaceutical chemistry,biochemistry and polymer chemistry.Therefore,it holds the potential for furthering the objectives of carbon neutrality and green chemistry.
基金
supported by the National Key Research and Development Program of China(2022YFC2105904)
the National Natural Science Foundation of China(22478043,22090030,52021004,U21A20312,22075033)。
