The first highly enantioselective, diastereoselective, and regioselective [2,3]-rearrangement of iodonium ylides has been developed as a general solution to catalytic onium ylide rearrangements. In the presence of a chiral copper catalyst, substituted allylic iodides couple with α-diazoesters to generate metal-coordinated iodonium ylides, which undergo [2,3]-rearrangements with high selectivities (up to >95:5 r.r., up to >95:5 d.r., and up to 97 % ee). The enantioenriched iodoester products can be converted stereospecifically into a variety of onium ylide rearrangement products, as well as compounds that are not accessible by classical onium ylide rearrangements.

中文翻译：

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铜催化的对映体，非对映体和区域选择性[2,3]重排的碘鎓盐。

碘鎓碘化物的第一个高度对映选择性，非对映选择性和区域选择性[2,3]-重排已被开发为催化鎓叶立德重排的一般解决方案。在手性铜催化剂的存在下，取代的烯丙基碘化物与α-重氮酸酯偶合，生成金属配位的碘鎓碘化物，这些碘化物经历了[2,3]重排，选择性高（高达> 95：5 rr，高达> 95） ：5 dr，最高可达97％ee）。可以将对映体富集的碘酸酯产品立体定向转化为各种鎓叶立德重排产物，以及经典的鎓叶立德重排无法获得的化合物。