cyanobis(oxazoline) as chiral ligands and Mn as reductant. Aryl and heteroaryl bromides react with phenyl aldehyde to produce dibenzyl alcohols in 16–99 % yields with 53–92 % ees. Morever, phenyl chloride with aryl, heteroaryl and alkyl aldehydes synthesize dibenzyl alcohols in high yields with moderate enantioselectivities.
以
氰基双(
恶唑啉)为手性
配体,Mn为还原剂,研究了
镍催化芳基卤化物与醛的对映选择性加成反应。芳基
溴和杂芳基
溴与苯醛反应生成二
苄醇,产率 16-99%,ee 53-92%。此外,苯
氯与芳基、杂芳基和烷基醛可以高产率合成具有中等对映选择性的二
苄醇。