Synthesis of Chromones through LiOtBu/Air??Mediated Oxidation and Regioselective Cyclization of o??Hydroxyphenyl Propargyl Carbinols

…, C Wan, Q Wang, B Zhang, L Gao, Z Zha…

Index: Zhang, Shuai; Wan, Changfeng; Wang, Qiang; Zhang, Baiqun; Gao, Lingfeng; Zha, Zhenggen; Wang, Zhiyong European Journal of Organic Chemistry, 2013 ,  # 11  p. 2080 - 2083

Full Text: HTML

Citation Number: 8

Abstract

Abstract A cascade oxidative cyclization reaction for the synthesis of chromone derivatives was developed by using LiOtBu as a mediator and air as an oxidant. The reaction was carried out without the assistance of a transition metal under mild conditions to afford the chromones in good yields with high regioselectivities.