Chemistry of bent bonds. XXV. Reactions of trans-fused cyclopropanes. Synthesis and solvolysis of the epimeric 2-hydroxy-trans-bicyclo[6.1.0]nonane p-nitrobenzoates
The two isomeric dibromides, obtained by the addition of bromine to cyclonona-1,2-diene (4), have been identified as 2,3-dibromo-cis-cyclononene (2; RBr) and 1,4-dibromo-cis-cyclononene (5; RBr); these compounds were obtained in the approximate relative proportions of 40:60.