E. Vilsmaier et al., FUNCTIONALIZED CHLOROENAMINES IN AMINOCYCLOPROPANE SYNTHESIS .11. BICYCLO[3.1.0]HEXANE DERIVATIVES PREFERRING A CHAIR CONFORMATION, Perkin transactions. 2, (10), 1993, pp. 1895-1900
endo-endo-3,6-Diaminobicyclo[3.1.0]hexane species 6 prefer a chair con
formation. This has been established by X-ray structure analysis of de
rivative 6c and by H-1 and C-13 NMR spectroscopic analysis of compound
s 6a and 6b. Intramolecular hydrogen bonding in 13, the monoammonium s
alt of 6b, can change the conformational situation.