On phenanthrene-4,5-quinones: a synthesis of morphenol
Abstract
1,3,6,8-Tetra-t-butyphenanthrene-4,5-quinone (10) has been prepared as a short-lived species in solution, and rapidly rearranges to a dienone (12) which on debutylation yields morphenol (14): the corresponding 9,10-dihydroquinone (6) crystallises as its oxepine valence isomer (7).