An Efficient, Ligand-Free, Heterogeneous Supported Copper Hydroxide Catalyst for the Synthesis of N,N-Bicyclic Pyrazolidinone Derivatives
作者:Kazuaki Yoshimura、Takamichi Oishi、Kazuya Yamaguchi、Noritaka Mizuno
DOI:10.1002/chem.201002793
日期:2011.3.28
Truly heterogeneous with retention of its high performance: The 1,3‐dipolar cycloaddition of azomethine imines to terminal alkynes was efficiently promoted by the easily prepared, inexpensive, supported copper hydroxide, Cu(OH)x/Al2O3. Various kinds of azomethine imines and terminal alkynes could be utilized as dipoles and dipolarophiles, respectively, to form the corresponding N,N‐bicyclic pyrazolidinone
真正的异质性并保留了其高性能:易于制备,价格低廉的负载型氢氧化铜Cu(OH)x / Al 2 O 3可以有效地促进偶氮甲亚胺在末端炔烃上的1,3-偶极环加成反应。各种偶氮甲亚胺和末端炔烃可分别用作偶极子和偶极亲子,以高收率形成相应的N,N-双环吡唑烷酮衍生物。