A Two-Ring Flip as the Threshold Enantiomerization Route for a Triarylvinyl Propeller. 1D and 2D NMR and Static and Dynamic Stereochemistry of Trimesitylethylene

Article abstract of DOI:10.1021/jo00362a016

1,2,2-Trimesitylethylene (16) was prepared by dehydratation of 1,2,2-trimesitylethanol.Its 1D 1H and 13C NMR spectra at room temperature show separate signals for pairs of groups (o-Me, o-C, m-C, and m-H)on the same ring, in agreement with a propeller con