A Ring-Closing Yne-Carbonyl Metathesis of Ynamides
摘要:
An acid-catalyzed ring-closing ynamide-carbonyl metathesis is described here. This hetero RCM methodology is applicable to the construction of carbocycles as well as heterocycles such as chromenes, quinolizidines, indolizidines, and pyrrolizidines.
Pauson–Khand cycloaddition reactions of chiral ynamides. Observation of an unusual endo-addition with norbornadiene
作者:Lichun Shen、Richard P. Hsung
DOI:10.1016/j.tetlet.2003.10.064
日期:2003.12
Pauson–Khandcycloadditions using chiral ynamides are achieved in modest to good yields with excellent regioselectivity and modest stereoselectivity. An unusual endo addition is found when using norbornadiene and substituted ynamides, leading to cycloadducts that were not observed in previous studies using ynamides or ynamines.
A Ring-Closing Yne-Carbonyl Metathesis of Ynamides
作者:Kimberly C. M. Kurtz、Richard P. Hsung、Yanshi Zhang
DOI:10.1021/ol052487s
日期:2006.1.1
An acid-catalyzed ring-closing ynamide-carbonyl metathesis is described here. This hetero RCM methodology is applicable to the construction of carbocycles as well as heterocycles such as chromenes, quinolizidines, indolizidines, and pyrrolizidines.