A general and efficient direct method for the α-substitution of Morita-Baylis-Hillman alcohols with carbon- and heteroatom-centred nucleophiles such as alcohols, arenes, 1,3-dicarbonyl compounds, and thiols in the presence of FeCl3·6H2O as catalyst has been developed. The reaction is operationally straightforward, accomplished in good to excellent product yields (40â99%) and with exclusive α-regioselectivity under mild conditions that did not need an inert and moisture-free environment.
本研究开发了一种通用、高效的直接方法,用于在FeCl3Â-6H2O作为催化剂的条件下,将莫里塔-贝利斯-希尔曼醇与以碳和杂原子为中心的亲核物(如醇、炔、1,3-二羰基化合物和
硫醇)进行δ-取代反应。该反应操作简单,在温和的条件下,不需要惰性和无湿环境,就能获得良好到极佳的产品收率(40%-99%)和独有的δ-区域选择性。