A novel periselective cycloaddition of cycloheptatriene with cyclohexa-2,4-dienones
作者:Vishwakarma Singh、Mini Porinchu
DOI:10.1016/s0040-4039(00)73570-2
日期:1993.4
A highly periselective cycloaddition of cycloheptatriene and cyclohexa-2,4-dienones(2a-c) to endo tricyclic systems (6a-c) and their photo conversion to cage compunds (7a-c ) has been reported. It has been shown that the adduct 6c arise via Cope rearrangement of the initially formed pi4s(dienone) + pi2s(CHT) adduct 5c.
Pericyclic reaction of cyclohexa-2,4-dienones with cyclohexa-1,3-diene and cycloheptatriene: The role of cyclohexadienones as π4 and π2 component, cope rearrangement and photoreaction of the adducts
Pericyclicreaction of cyclohexa-2,4-dienones 8a-c with cycohexa-1,3-diene 2b and cycloheptatriene 5 has been reported. Cyclohexadienones react with 2b and 5 to give cycloadducts 9a-c, 10a-c and 13a-c, 15b,c respectively. Cope rearrangement of the adducts 10a-c and 15b,c to 9a-c and 13b,c, respectively has been described. It has been shown that cyclohexa 2-4-dienones behave as 4π component (diene)