CuI/1,10-phen/PEG promoted decarboxylation of 2,3-diarylacrylic acids: synthesis of stilbenes under neutral and microwave conditions with an in situ generated recyclable catalyst
作者:Yong Zou、Qi Huang、Tong-kun Huang、Qing-chun Ni、En-sheng Zhang、Tian-long Xu、Mu Yuan、Jun Li
DOI:10.1039/c3ob41588k
日期:——
A series of trans- or cis-stilbenes have been synthesized in good to excellent yields via a functional group-dependent decarboxylation process from the corresponding 2,3-diaryl acrylic acids in a neutral CuI/1,10-phen/PEG-400 system under microwave conditions. The in situ generation of the recyclable catalytic complex, the use of environmentally benign solvent PEG-400, the operational simplicity, the short reaction times, as well as the functional group-dependent chemo- and stereo-selectivity have made the decarboxylation process a highly efficient and applicable protocol.
在中性 CuI/1,10-phen/PEG-400 体系中,通过官能团依赖性脱羧过程,从相应的 2,3-二芳基丙烯酸中合成了一系列反式或顺式二苯乙烯,收率良好至优异在微波条件下。可回收催化复合物的原位生成、环境友好溶剂 PEG-400 的使用、操作简单、反应时间短以及官能团依赖性化学和立体选择性使得脱羧过程成为高度高效且适用的协议。