Synergistic Effect of Palladium and Copper Catalysts: Catalytic Cyclizative Dimerization of ortho-(1-Alkynyl)benzamides Leading to Axially Chiral 1,3-Butadienes
作者:Bo Yao、Carole Jaccoud、Qian Wang、Jieping Zhu
DOI:10.1002/chem.201200215
日期:2012.5.7
Two is better than one: In the presence of Pd(OAc)2 and Cu(OAc)2, o‐(1‐alkynyl)benzamides 1 were converted into bis‐iminobenzoisofurans with an axiallychiral 1,3‐diene 2 unit. The coexistence of both Pd and Cu catalysts was found to be essential for both the cyclizativedimerization process and for the observed unusual cyclization mode.