Synthesis and properties of 7,7-dichloro-3,4-benzobicyclo[4.1.0]heptane, its tricarbonylchromium complexes, and isomeric 7-chloro-3,4-benzobicyclo[4.1.0]heptanes

Article abstract of DOI:10.1007/BF02495983

The reaction of Cr(CO)₆ with 7,7-dichloro-3,4-benzobicyclo[4.1.0]heptane gave the corresponding exo- and endo-chromium tricarbonyl complexes in a ratio of 4.5 : 1 The structures of the resulting compounds were established by NMR spectroscopy, mass spectrometry, and X-ray structural analysis. Reduction of dichlorobenzobicycloheptane and its chromium tricarbonyl complexes with LiAlH₄ afforded exo- and endo-7-chloro-3,4-benzobicyclo[4.1.0]heptanes in a 3.5 : 1 ratio.