Electroreductive Intermolecular Coupling of Chromones with Benzophenones: Synthesis of 2-Diarylmethylchromones and Tetrasubstituted Furans
作者:Naoki Kise、Hiroaki Nagamine、Toshihiko Sakurai
DOI:10.1002/ejoc.201900519
日期:2019.6.16
The electroreductive coupling of chromones with benzophenones in the presence of TMSCl gave adducts reacted at the 2‐position of chromones as trimethylsilyl ethers. From 3‐methyl‐ and 3‐phenylchromones, 2,3‐cis‐adducts were formed predominantly. 2‐Diarylmethylchromones were obtained by dehydrosiloxylation of the adducts. Tetrasubstituted furans were also synthesized from the adducts through ring‐opening