An efficient method for regioselective ring opening of epoxides by amines under microwave irradiation using Bi(NO<sub>3</sub>)<sub>3</sub>·5H<sub>2</sub>O as a catalyst
作者:Shobha Bansal、Yogendra Kumar、Parveen Pippal、Dipak K. Das、Panchanan Pramanik、Prabal P. Singh
DOI:10.1039/c6nj03701a
日期:——
Bismuth(III)nitrate pentahydrate, a highly efficient environmentally benign catalyst, is used for the nucleophilic ring opening of epichlorohydrin and styrene oxide with aromatic, aliphatic and heteroaromatic amines under solvent free microwave conditions reducing the reaction time drastically to afford the corresponding β-amino alcohols in good to excellent yields with high regioselectivity. The products obtained were
硝酸铋(III)五水合物,一种高效的环境友好型催化剂,用于在无溶剂微波条件下与芳香族,脂肪族和杂芳香族胺一起对环氧氯丙烷和氧化苯乙烯进行亲核开环,从而大大缩短了反应时间,从而提供了相应的β-氨基醇具有良好的收率和优异的选择性,并具有较高的区域选择性。获得的产物通过柱色谱法直接纯化,并通过1 H和13 C NMR,FTIR和质谱进行表征。