Visible-Light-Induced Photocatalytic Synthesis of β‑Keto Dithiocarbamates via Difunctionalization of Styrenes

A facile photocatalyzed strategy
for difunctionalization of styrenes
in the presence of CS2 and amines providing β-keto
dithiocarbamates has been developed. In the case of 4-nitrostyrene
and 2-vinylpyridine, however, only 2-arylethylthiocarbamates are interestingly
formed without the aid of photoredox catalysis/TBHP.

本研究开发了一种简便光催化策略，可在二硫化碳（CS2）与胺类存在的条件下实现苯乙烯（styrenes）的双官能化反应，生成β-酮二硫代氨基甲酸酯（β-keto dithiocarbamates）。然而，当以4-硝基苯乙烯（4-nitrostyrene）与2-乙烯基吡啶（2-vinylpyridine）为底物时，无需借助光氧化还原催化（photoredox catalysis）/叔丁基过氧化氢（TBHP）即可发生反应，有趣的是，仅生成2-芳基乙基硫代氨基甲酸酯（2-arylethylthiocarbamates）。