Conjugate reduction of α,β-unsaturated esters and amides with tributyltin hydride in the presence of magnesium bromide diethyl etherate
作者:Satomi Hirasawa、Yoshie Tajima、Yoko Kameda、Hajime Nagano
DOI:10.1016/j.tet.2007.08.059
日期:2007.11
We report herein that the conjugate reduction of α,β-unsaturated esters and amides, such as aryl acrylates, pantolactone esters of acrylic acids, diethyl itaconate and N-crotonylcamphorsultam, with tributyltin hydride proceeded in moderate to high yields in the presence of magnesium bromide diethyl etherate. The effect of metal halide enhancing the yields is also described.
我们在此报告,在溴化镁存在下,α-β-不饱和酯和酰胺(如丙烯酸芳基酯,丙烯酸的泛内酯,丙烯酸衣康酸酯和N-巴豆基樟脑樟脑)与氢化三丁基锡的共轭还原反应以中等至高收率进行二乙醚。还描述了金属卤化物提高产率的作用。