Conformational analysis of benzoanellated nine-membered rings, Part 1. 1,4,5,7-tetrahydro-3H-2,6-benzodithionin derivatives
作者:Barbara Rys、Helmut Duddeck、Monika Hiegemann
DOI:10.1016/s0040-4020(01)86418-8
日期:1991.1
The NMR spectra of compounds 1–5, recorded at different temperatures, are discussed and interpreted in terms of conformational equilibrium. Ground state conformations are found to be chiral, ring inversionbarriers are surprisingly high (ca 48 kJ/mol).