Heterogeneous Copper Nanocatalyst and Manufacturing Methods Thereof
申请人:Park Jai Wook
公开号:US20110172417A1
公开(公告)日:2011-07-14
This invention relates to a heterogeneous copper nanocatalyst composed of copper nanoparticles immobilized on a boehmite support, a method of preparing the same, and the use thereof. The copper nanocatalyst composed of the copper nanoparticles supported on boehmite exhibits excellent performance in a Huisgen cycloaddition reaction and an A3 coupling reaction of aldehyde, amine and alkyne. The copper nanocatalyst is able to be prepared in a large scale and shows superior reactivity even when used in a small amount under mild conditions without an additive in an organic reaction. This heterogeneous catalyst is easy to separate and reuse after the reaction.
Solvent‐free Synthesis of Alkylaminophenols via Petasis Boronic Mannich Reaction in One Pot without Catalysts
作者:Ying Liu、Limin Wang、Yuanyuan Sui、Jianjun Yu
DOI:10.1002/cjoc.201090340
日期:2010.10
By using solvent‐free and heat conditions, the Petasis boronic Mannich reaction of salicylaldehydes with various boronic acids and secondary amines without catalyst is described. The alkylaminophenols were obtained in moderate to good yields in a shorter reaction time than the traditional methods.