Tandem Cyclization of Alkynes via Rhodium Alkynyl and Alkenylidene Catalysis
作者:Jung Min Joo、Yu Yuan、Chulbom Lee
DOI:10.1021/ja066374v
日期:2006.11.1
A rhodium(I)-catalyzed tandem cyclization of alkynes has been developed. The reaction allows for multiple bond formations to occur at both the alpha- and beta-positions of alkynes undermildconditions to yield a variety of fused ring systems as the products. In the presence of triethylamine and the complex derived from [Rh(COD)Cl]2 and P(4-F-C6H4)3, a terminal alkyne is converted to a rhodium alkynyl