Asymmetric hydroazidation of α -substituted vinyl ketones catalyzed by chiral primary amine
作者:Zai-Kun Xue、Nian-Kai Fu、San-Zhong Luo
DOI:10.1016/j.cclet.2017.01.014
日期:2017.5
ketones by using chiral primary amines as the catalysts. A simple chiral primary-tertiary diamine catalyst derived from l -phenylalanine was found to readily promote this aza-Michael addition reaction with enamine protonation as the key stereogenic step, thus enabling the effective synthesis of α -chiral β -azido ketones with good yields and moderate enantioselectivities.
摘要我们在此报道了以手性伯胺为催化剂进行α-取代乙烯基酮不对称加氢叠氮的第一个实例。发现一种简单的衍生自1-苯丙氨酸的手性伯叔叔二胺催化剂,可以很容易地促进烯键质子化的氮杂-迈克尔加成反应,这是关键的立体定向步骤,从而可以高效合成具有良好收率的α-手性β-叠氮基酮。中度对映选择性。