Although known as major greenhouse gas, CO2 is abundant, nontoxic and renewable C1 source in contemporary organic chemistry. Solar energy, a clean and inexhaustible energy source, thus is regarded as an ideal energy to address the thermodynamic issue facing in performing CO2 conversion. In this context, efficient conversion of CO2 into fuels and chemicals in virtue of solar energy would be promising, and also faces great challenge. Among the CO2 reductive products, CO is a versatile molecule and has attracted tremendous industrial interest for the production of bulk and fine chemicals. From the standpoint of green and sustainable chemistry, it is appealing and challenging to couple the “CO2 reduction to CO” with subsequent carbonylation with the in situ formed CO as shown in Scheme 1. In this work, we developed novel photoreductive functionalization of CO2 strategy to construct new C-C, C-N and C-O bond going through the respective palladium-catalyzed Suzuki carbonylation, aminocarbonylation and alkoxycarbonylation of aryl iodides with CO in situ generated through the photoreduction of CO2. Therefore, this work fills the gap between the photoreduction of CO2 and the valorization of the obtained reductive products, and constitutes a great step toward the incorporation of solar energy in the production of chemicals through CO2 valorization.

Photocatalysis for reductive functionalization of CO2

2019 Spring National Meeting

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