Iridium-Catalyzed, Regio- and Enantioselective Allylic Substitution with Aromatic and Aliphatic Sulfinates
作者:Mitsuhiro Ueda、John F. Hartwig
DOI:10.1021/ol9023248
日期:2010.1.1
The iridium-catalyzed allylation of sodium sulfinate to form branched allylic sulfones is reported. The reactions between various sodium sulfinates and achiral allylic carbonates occur in good yields, with high selectivity for the branched isomer, and high enantioselectivities (up to 98% ee).
Gold(I)-Catalyzed Intramolecular Hydroamination of N-Allylic N′-Arylureas to form Imidazolidin-2-ones
作者:Hao Li、Feijie Song、Ross A. Widenhoefer
DOI:10.1002/adsc.201000844
日期:2011.4.18
Treatment of N‐allylic N′‐arylureas with a catalytic 1:1 mixture of di‐tert‐butyl‐o‐biphenylphoshphine gold(I) chloride and silver hexafluorophosphate (1 mol%) in chloroform at room temperature led to 5‐exo‐hydroamination to form the corresponding imidazolidin‐2‐ones in excellent yield. In the case of N‐allylic ureas that possessed an allylic alkyl, benzyloxymethyl, or acetoxymethyl substituent, gold(I)‐catalyzed