K. Ang, S. Bräse, A. Steinig
Aug 26, 1996
Citations
0
Influential Citations
49
Citations
Journal
Tetrahedron
Abstract
Abstract Various 2-bromo-1,6- and 2-bromo-1,7-dienes were cyclized under palladium catalysis producing vicinal exodimethylenecycloalkanes which reacted with dienophiles (either present during the cyclization or added afterwards in a one-pot process) to give bicyclo[4.3.0]nonene and bicyclo[4.4.0]-decene derivatives in good to excellent yields. Among the examples reported are the first cases of intramolecular Heck reactions with a (bromomethylene)cyclopropane starter or/and a methylenecyclopropane terminator which occur without ring opening of the cyclopropyl group.