Gold(I)-Catalyzed Stereoconvergent, Intermolecular Enantioselective Hydroamination of Allenes
作者:Kristina L. Butler、Michele Tragni、Ross A. Widenhoefer
DOI:10.1002/anie.201201584
日期:2012.5.21
Gold and silver: A 1:2 mixture of [(S)‐1}(AuCl)2] and AgBF4 catalyzes the enantioselectivehydroamination of chiral, racemic 1,3‐disubstituted allenes with N‐unsubstituted carbamates to form N‐allylic carbamates in good yield, with high regio‐ and diastereoselectivity, and up to 92 % ee (see scheme, Cbz=benzyloxycarbonyl).
The regioselective Wacker oxidation of internal allylamines: synthesis of functionalized and challenging β-amino ketones
作者:Mateusz Garbacz、Sebastian Stecko
DOI:10.1039/d2ob01843h
日期:——
palladium-catalysed oxidation of internal allylamine derivatives to β-amino ketones is reported. The transformation occurs at room temperature and shows a wide substrate scope as well as high functional group and N-protecting group tolerance. We also describe potential applications of the method, e.g., the synthesis of bioactive molecules or simple transformations of selected β-amino ketones into other interesting building