Direct Amination of Secondary Alcohols Using Ammonia
作者:Dennis Pingen、Christian Müller、Dieter Vogt
DOI:10.1002/anie.201002583
日期:2010.10.25
Hydrogen shuttle: For the first time secondaryalcohols and ammonia can be directly converted into primary amines with a selectivity of up to 99 % by using a simple ruthenium/phosphine catalyst (see scheme; R1, R2= alkyl, aryl, alkenyl; M=[Ru3(CO)12]; and L=phosphine ligand).
氢穿梭:通过使用简单的钌/膦催化剂,仲醇和氨首次可直接以高达99%的选择性直接转化为伯胺(参见方案; R 1,R 2 =烷基,芳基,烯基; M = [Ru 3(CO)12 ];和L =膦配体)。
Modular Synthesis of 1,2-Diamine Derivatives by Palladium-Catalyzed Aerobic Oxidative Cyclization of Allylic Sulfamides
作者:Richard I. McDonald、Shannon S. Stahl
DOI:10.1002/anie.200906342
日期:——
Allylic sulfamides undergo aerobic oxidativecyclization at room temperature, mediated by a Pd(O2CCF3)2/DMSO catalyst system in tetrahydrofuran. The cyclic sulfamide products are readily converted into 1,2‐diamines, and substrates derived from chiral allylic amines cyclize with very high diastereoselectivity.