The first one‐pot tandem Michael addition/enantioselective Conia‐ene cyclization of N‐protected prop‐2‐yn‐1‐amines with 2‐methylene‐3‐oxoalkanoates promoted by chiral iron(III)/silver(I) cooperative catalysts has been developed. Alkyl 4‐methylenepyrrolidine‐3‐acyl‐3‐carboxylates, which can be transformed into β‐proline derivatives, are obtained in high yield with high enantioselectivity.

中文翻译：

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手性铁（III）/银（I）协同催化介导的一锅串联迈克尔加成/对映选择性Conia-Ene环化反应。

由手性铁（III）/银（I）协同催化剂促进的N保护的prop-2-yn-1胺与2-亚甲基3-氧代链烷酸酯的第一个单锅串联Michael加成/对映选择性的对苯二烯环化反应已开发。可以转化为β-脯氨酸衍生物的4-亚甲基吡咯烷-3-烷基-3-羧酸烷基酯，以高收率和高对映选择性获得。