Pd(II)-catalyzed intramolecularaminocarbonylation of olefins bearing many types of nitrogen nucleophiles has been examined under two typical conditions: acidic conditions [conditions A, typically PdCl(2) (0.1 equiv) and CuCl(2) (3.0 equiv) under 1 atm of CO at room temperature in methanol] and buffered conditions [conditions B, typically PdCl(2) (0.1 equiv) and CuCl(2) (2.3 equiv) under 1 atm of CO at
<i>syn</i>-1,2-Amino Alcohols via Diastereoselective Allylic C−H Amination
作者:Kenneth J. Fraunhoffer、M. Christina White
DOI:10.1021/ja071905g
日期:2007.6.13
A novel Pd/sulfoxide catalyzed diastereoselective allylic C−H amination reaction of chiralhomoallylic N-tosyl carbamates is reported. Densely oxygenated α-olefin substrates with multiple stereogenic centers undergo allylic C−H amination in excellent yields and with diastereoselectivities that are controlled by the stereocenter that bears the N-tosyl carbamate. Streamlined routes to stereochemically