Enantioselective Allylic Amination of Morita-Baylis-Hillman Carbonates Catalysed by Modified Cinchona Alkaloids
作者:Shan-Jun Zhang、Hai-Lei Cui、Kun Jiang、Rui Li、Zhen-Yu Ding、Ying-Chun Chen
DOI:10.1002/ejoc.200900944
日期:2009.11
An efficient procedure for the asymmetric allylic amination of Morita–Baylis–Hillman carbonates with cyclic imides catalysed by commercially available cinchona alkaloids is reported. It proves to be a facile protocol that affords α-methylene β-amino esters with good-to-excellent enantioselectivities (up to 94 % ee) and in high yields (up to 97 %). (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim
报道了一种用市售金鸡纳生物碱催化的环状酰亚胺对 Morita-Baylis-Hillman 碳酸酯进行不对称烯丙基胺化的有效方法。事实证明,它是一种简便的方案,可提供具有良好到出色的对映选择性(高达 94% ee)和高产率(高达 97%)的 α-亚甲基 β-氨基酯。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)