Conformational analysis of benzoannulated nine-membered rings. Part 4—7,8-dihydro-6H-dibenzo[f,h][1,5]dioxonin and its derivatives
作者:Barbara Rys、Helmut Duddeck
DOI:10.1002/mrc.1260330205
日期:1995.2
coalescence effects in the spectra are discussed and assigned to the racemization of the C2 symmetry conformation of the nine‐membered ring. The barrier of this process is ca. 64 kJ mol−1. A spirocyclohexane derivative revealed a second conformational process namely inversion of the six‐membered ring.