Formation of twistane derivatives via a novel base-catalysed rearrangement. X-Ray crystal structure of 1,3,4,6,8-pentamethyl-exo-9-methylene-tricyclo[4.4.0.03,8]decane-2,5-dione
Abstract
A vinylogous, base-catalysed acyloin rearrangement leading to products (4) and (5) possessing the twistane (tricyclo[4.4.0.03,8]decane) ring skeleton is reported; an X-ray crystal structure analysis of (5) was performed.