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Download fileActivation of Chromium Catalysts by Photoexcited Hantzsch Ester for Decarboxylative Allylation of Aldehydes with Butadiene
journal contribution
posted on 2021-10-04, 19:39 authored by Shuangjie Lin, Yuqing Chen, Huaipu Yan, Yonghong Liu, Yuchen Sun, Erjun Hao, Caizhe Shi, Dandan Zhang, Nan Zhu, Lei ShiMetallaphotocatalysis often needs
light-absorbing metal-polypyridyl
complexes, semiconductors, or organic dyes, which can modify the oxidation
state of metal catalysts. Here, we first report that photoexcitation
of Hantzsch ester can directly activate chromium reagents through
a single-electron transfer process. The synthetic application was
demonstrated through a photoredox decarboxylative allylation of aldehydes
with feedstock butadiene without exogenous photocatalysts, metallic
reductants, or additives.