A facile, strain-induced 1,2-aryl migration in 5,6-diarylacenaphthenes
摘要:
Treatment of 5,6-di(3-tert-butyl-4-methoxyphenyl)acenaphthene 3 with boron trichloride leads to rapid formation of the 1,2-aryl migration product 4. The rearrangement is catalysed directly by boron trichloride and not by a proton, and results from the strain added by the tert-butyl functions of 3. (C) 2000 Elsevier Science Ltd. All rights reserved.