Cubic nano-copper(I) oxides as reusable catalyst in consecutive decarboxylative C H arylation and carbonylation: rapid synthesis of carbonyl dibenzofurans
作者:Rammyani Pal、Nivedita Chatterjee、Manas Roy、Sabyasachi Sarkar、Swarbhanu Sarkar、Asish Kumar Sen
DOI:10.1016/j.tetlet.2016.09.074
日期:2016.11
Consecutive chemo- and regio-selective decarboxylative CH arylation, followed by carbonylative CC coupling of aryl halide with isocyanide/alcohol was applied for the first time in one-step synthesis of carbonyl dibenzofurans with nanodomain cuprous oxide under aerobic condition. As a proof of concept, several novel dibenzofurans were synthesized from 2-(3-iodophenoxy)benzoic acid in good yield. The tandem protocol
连续的化学和区域选择性脱羧C H芳基化,然后是羰基C在好氧条件下,在纳米级氧化亚铜与羰基二苯并呋喃的一步合成中,首次将芳基卤化物与异氰化物/醇进行C偶联。作为概念的证明,由2-(3-碘苯氧基)苯甲酸以良好的产率合成了几种新颖的二苯并呋喃。串联方案消除了使用过量的催化剂,有害的有机溶剂,重金属(如钯或铑),配体,氧化剂或外部添加剂的使用。更重要的是,立方铜(I)纳米催化剂可以回收并循环用于三个连续的反应,而不会显着降低催化活性或改变其形态。使用水作为溶剂和可重复使用的催化剂使反应环境友好。