A Phosphonium Ylide as a Ligand for [3 + 2] Coupling Reactions of Epoxides with Heterocumulenes under Mild Conditions
作者:Yasunori Toda、Kousuke Hashimoto、Yoko Mori、Hiroyuki Suga
DOI:10.1021/acs.joc.0c01101
日期:2020.8.21
The potential of carbonyl-stabilized phosphonium ylides as ligands for novel catalysis was explored. We found that the combination of phosphonium ylides and metal halide salts efficiently catalyzed the reaction of epoxides with carbon dioxide under mild conditions. Five-membered cyclic carbonates, including disubstituted cyclic carbonates, were obtained in good yields with the use of 1 atm of carbon
探索了羰基稳定的磷化氢作为新型催化剂的配体的潜力。我们发现,在温和的条件下,yl叶立德和金属卤化物盐的组合有效地催化了环氧化物与二氧化碳的反应。在35°C下使用1 atm的二氧化碳,可以得到高收率的五元环状碳酸酯,包括二取代的环状碳酸酯。在类似的催化体系下,在与异氰酸酯的反应中,末端环氧化物可以转化为N-芳基恶唑烷酮。