均分解
化学
除氧
光化学
埃尼
激进的
立体化学
有机化学
催化作用
作者
Jiupeng Liu,Shuo Tang,Shichong Wang,Mengting Cao,Jingjing Zhao,Puyu Zhang,Pan Li
标识
DOI:10.1021/acs.joc.2c00989
摘要
Visible-light-induced 1,6-enyne-triggered C-Br bond homolysis of bromomalonates has been developed. This transition-metal-free, photocatalyst-free, and oxidant- and additive-free protocol affords an efficient approach for divergent synthesis of carbonylated and hydroxylated benzofurans from 1,6-enynes and bromomalonates under mild conditions. Significantly, mechanistic studies reveal that the homolysis of C-Br bonds appears to experience an energy-transfer pathway, and the atom-transfer radical addition products are the key intermediates to generate carbonylated and hydroxylated benzofurans.
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