An Efficient Palladium Catalyzed Stereocontrolled Synthesis of 4a-Angular Methyl Substituted Hydrofluorenes
作者:Jayanta K. Mukhopadhyaya、Sitaram Pal、Usha Ranjan Ghatak
DOI:10.1080/00397919508015849
日期:1995.6
A high yield s tereoselective synthesis of 4a-angularly methyl substituted cis-hexahydrofluorenes 5a-h and tetrahydrofluorenes 7a,b has been developed by palladium-catalyzed intramolecular Heck-type cyclization of the respective exo-olefins 4a-h and 4a,b through exclusive 5-exo-trig mode.