作者:Hwimin Seo、David R. Snead、Khalil A. Abboud、Sukwon Hong
DOI:10.1021/om200602k
日期:2011.11.14
the similarly bulky acyclic diaminocarbenes that show significant distortion from the coplanarity. The Au(I) complexes of AAOCs exhibited high efficiency in the hydroamination of alkenyl ureas. Bulkier AAOC–Au(I) complexes displayed faster reaction rates and higher conversions. The reaction rate, yield, and stereoselectivity observed with the AAOC–Au(I) catalyst were better than those with acyclic diaminocarbene
Room Temperature Hydroamination of <i>N</i>-Alkenyl Ureas Catalyzed by a Gold(I) <i>N</i>-Heterocyclic Carbene Complex
作者:Christopher F. Bender、Ross A. Widenhoefer
DOI:10.1021/ol062107i
日期:2006.11.9
[Structure: see text] Treatment of an N-4-pentenyl or N-5-hexenyl urea with a catalytic 1:1 mixture of a gold(I) N,N-diaryl imidazol-2-ylidine complex and AgOTf at or near roomtemperature leads to intramolecular exo-hydroamination to form the corresponding nitrogen heterocycle in excellent yield.