Zirconium borohydride piperazine complex, an efficient, air and thermally stable reducing agent
作者:M. Tajbakhsh、M.M. Lakouraj、F. Shirini、S. Habibzadeh、A. Nikdoost
DOI:10.1016/j.tetlet.2004.02.140
日期:2004.4
A zirconium borohydride piperazine complex (Ppyz)Zr(BH4)2Cl2, obtained by the reaction of an ethereal solution of ZrCl4 and LiBH4 with piperazine is a stable, selective and efficient reducing agent. (Ppyz)Zr(BH4)2Cl2 reduces aldehydes, ketones, silylethers, α,β-unsaturated carbonyl compounds and esters. The reactions were performed in diethyl ether at room temperature or under reflux, and the yields
通过使ZrCl 4和LiBH 4的醚溶液与哌嗪反应获得的硼氢化锆哌嗪锆络合物(Ppyz)Zr(BH 4)2 Cl 2是稳定,选择性和有效的还原剂。(Ppyz)Zr(BH 4)2 Cl 2还原醛,酮,甲硅烷基醚,α,β-不饱和羰基化合物和酯。反应在室温或回流下在乙醚中进行,相应醇的收率极好。观察到在酮存在下醛的选择性还原和在α,β-不饱和羰基还原中的完全区域选择性。