Lanthanide(III) trifluoromethanesulfonates as extraordinarily effective new catalysts for the aminolysis of 1,2-epoxides
作者:Marco Chini、Paolo Crotti、Lucilla Favero、Franco Macchia、Mauro Pineschi
DOI:10.1016/0040-4039(94)85073-9
日期:1994.1
Lanthanide(III) trifluoromethanesulfonates (triflates), such as Yb(OTf)3, Nd(OTf)3 and Gd(OTf)3, catalyze in a extraordinarily efficient way the aminolysis of 1,2-epoxides, affording the corresponding β-amino alcohols, at room temperature and in a non-protic solvent (CH2Cl2 or toluene), in very good yields. The reactions are completely anti stereoselective and highly regioselective.
三氟甲烷磺酸镧系元素(III),例如Yb(OTf)3,Nd(OTf)3和Gd(OTf)3以非常有效的方式催化1,2-环氧化物的氨解反应,从而提供相应的β-氨基在室温下和在非质子溶剂(CH 2 Cl 2或甲苯)中以非常高的收率得到醇。反应完全是抗立体选择性的和高度区域选择性的。