Copper-Catalyzed One-Pot Synthesis of 2-Arylthiochromenones: An in Situ Recycle of Waste Byproduct as Useful Reagent
作者:Subramani Sangeetha、Govindasamy Sekar
DOI:10.1021/acs.orglett.8b03508
日期:2019.1.4
Copper-catalyzed one-pot synthesis of various 2-arylthiochromenones is developed using xanthate as an odorless sulfur source from easily acquirable 2′-halochalcones. This methodology demonstrates that the cross-coupled product thiochromanone synthesized from 2′-halochalcones (upstream reaction) is oxidized to thiochromenone (downstream reaction) in the same pot using waste byproduct (KI) of the first
使用黄原酸酯作为无味硫源,从容易获得的2'-卤代al烯中开发了铜催化的一锅合成各种2-芳基硫代色酮。该方法论证明了使用第一步的副产物(KI)作为强力氧化剂分子碘(I 2)。这种一锅法合成方法已进一步扩展为使用二甲基亚砜(DMSO)作为溶剂和亚甲基源来合成3,3'-亚甲基双硫黄酮。