Based on the regioselective intermolecular Suzuki coupling and subsequent intramolecular Ullmann C–O coupling reactions, one-pot synthesis of benzo[4,5]thieno[3,2-b]benzofurans (BTBFs) was developed after optimization of the reaction conditions including catalysts, solvents, bases, ligands and reaction times. The one-pot reaction, with only 2 mol% Pd(PPh3)4 and 2 mol% copper(I) thiophene-2-carboxylate
基于区域选择性分子间 Suzuki 偶联和随后的分子内 Ullmann C-O 偶联反应,在优化包括催化剂在内的反应条件后,开发了一锅法合成苯并[4,5]噻吩并[3,2- b ]苯并呋喃(BTBFs) 、溶剂、碱、配体和反应时间。一锅法反应,仅用 2 mol% Pd(PPh 3 ) 4和 2 mol% 铜( I ) 噻吩-2-羧酸盐 (CuTc) 作为催化剂,K 3 PO 4 ·3H 2 O 作为碱和叔-丁醇作为溶剂,为各种底物提供中等至良好的产率(高达 70%)。