Conformational Analysis of Spirocyclopropane- and Spirooxirane-annelated Dibenzobicyclo[4.4.1]undecanes by 1H NMR Spectroscopy and X-Ray Crystallography

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Shuntaro Mataka, Tsuyoshi Sawada, Masahi Tashiro, Masahiko Taniguchi and Yoshiharu Mitroma


Abstract

Conformational behaviour of dibenzo[c,h]bicyclo[4.4.1]undecanes having a dichloro- and a dibromo-cyclopropane ring, together with an oxirane ring on the methylene bridge, has been studied by 1H NMR spectroscopy and X-ray crystallography.


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