1987 Volume 60 Issue 3 Pages 969-975
The oxidation of the methylene moiety of 4,5,6,7-tetrahydrocyclohepta[hi]pyrrolo[2,1,5-cd]indolizines with NBS gave 5-bromo-6,7-dihydro- (4) and 5-bromo-cyclohepta[hi]pyrrolo[2,1,5-cd]indolizines. The dehydrobromination of 4 with DBU afforded cyclohepta[hi]pyrrolo[2,1,5-cd]indolizines in good yields. The characteristic electronic features of these cycloheptapyrroloindolizines are discussed on the basis of the MO calculations and the spectroscopic properties.
This article cannot obtain the latest cited-by information.