作者:Michael E. Garst、Lloyd J. Dolby、Shervin Esfandiari、N. Andrew Fedoruk、Natalie C. Chamberlain、Alfred A. Avey
DOI:10.1021/jo0008136
日期:2000.10.1
p-toluenesulfonate were reduced with 3, 7, and 7.2 Li/mol of compound to give thiophenol (74%), adamantamine (91%), and 1-adamantane methanol (75%), respectively. In this solvent system naphthalene and 3-methyl-2-cyclohexene-1-one were reduced to isotetralin (74%) and 3-methyl cyclohexanone (quantitative) with 5 and 2.2 Li/mol of starting compound, respectively. Oximes and O-methyloximes were reduced to their corresponding
描述了使用低分子量胺作为溶剂用锂和乙二胺还原几种类型的化合物。在所有情况下,每克原子的锂使用1摩尔的乙二胺或N,N'-二甲基乙二胺。在某些情况下,添加醇作为质子供体是有益的。将这些反应条件用于N-苄基酰胺和内酰胺的脱苄基反应,它们难以用氢和催化剂进行氢解。在回流的苄胺中,由毛果芸香碱盐酸盐合成的N-苄基内酰胺2,每摩尔正丙胺中的2摩尔锂(10 Li / mol)使用10克原子的锂,以良好的产率脱苄基化。N-苄基-N-甲基癸酸酰胺4(6Li / mol)在叔丁胺/ N,N′-二甲基乙二胺中的脱苄基作用以70%的收率得到N-甲基癸酸酰胺6。或者,在叔丁醇/正丙胺/乙二胺中还原4(7Li / mol)得到正癸醛12,产率为36%。在相同条件下,分别用3、7和7.2 Li / mol的化合物还原硫代苯甲醚,1-金刚烷-对甲苯磺酰胺和1-金刚烷甲基对甲苯磺酸酯,得到硫酚(74%),金刚胺(91%)