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。