Abstract An efficient method for the synthesis of functionalized chroman-4-ones induced by visible light via the radical cyclization reaction of sulfinic acids and o-(allyloxy)arylaldehydes at room temperature was described. The corresponding products were isolated with moderate to good yields. Radical mechanism was proposed for this transformation. Anti-microbial activity of some desired compounds
Visible-Light-Induced External Radical-Triggered Annulation To Access CF<sub>2</sub>-Containing Benzoxepine Derivatives
作者:Haoyue Xiang、Qing-Lan Zhao、Peng-Ju Xia、Jun-An Xiao、Zhi-Peng Ye、Xiong Xie、Huan Sheng、Xiao-Qing Chen、Hua Yang
DOI:10.1021/acs.orglett.8b00131
日期:2018.3.2
A facile and diversified synthesis of functionalized CF2-containing benzoxepine derivativesvia photoredox catalysis was achieved in this work. This novel protocol features broad substrate scope, mild reaction conditions, operational simplicity, easy scale-up, and versatile derivatization, which would facilitate its practical and broad applications in the construction of valuable and synthetically