Palladium-Catalyzed Three-Component Tandem Cyclization Reaction of 2-(2,3-Allenyl)acylacetates, Organic Halides, and Amines: An Effective Protocol for the Synthesis of 4,5-Dihydro-1H-pyrrole Derivatives
作者:Jiajia Cheng、Xuefeng Jiang、Can Zhu、Shengming Ma
DOI:10.1002/adsc.201100002
日期:2011.7
A domino three‐component reaction of 2‐(2′,3′‐allenyl)acylacetates with aryl or alkenyl halides and aryl‐ or benzylamines afforded 4,5‐dihydro‐1H‐pyrrole derivatives highly chemo‐ and regioselectively in one pot through imine formation/imine‐enamine tautomerization under the catalysis of palladium(0) and toluenesulfonic acid monohydrate. A high diastereoselectivity was observed.
2(2',3'-烯基)乙酰乙酸酯与芳基或烯基卤化物和芳基或苄基胺的多米诺三组分反应可在一锅中通过化学反应和区域选择性对4,5-二氢-1 H-吡咯衍生物进行高度化学选择性在钯(0)和甲苯磺酸一水合物的催化下亚胺形成/亚胺-烯胺互变异构 观察到高非对映选择性。