Bromination of Tricyclo[7.2.1.0~(2,7)]dodeca-2,4,6,10-tetraene Derivatives:Electronic and Neighboring Group Effects on Bromination

摘要

The bromination reaction of tricyclo[7.2.1.0~(2,7)]dodeca-2,4,6,10-tetraene derivatives was studied.The bromination of 9 gave only rearranged products 12 and 13,while the bromination of 8 with molecular bromine formed both rearranged 12 and non-rearranged products 15 and 16.The possible role of a substituent in the rearrangements was examined.All compounds were characterized properly,in particular by NMR spectra and chemical transformation.