Rearrangement of epoxidized benzyne/furan cycloadducts: a convenient route to α-formyl and α-acyl-2-indanones
摘要:
The Lewis acids, LiClO4 and BF3.Et2O, promote carbocation driven ring contracting rearrangements of epoxides derived from the Diels-Alder adducts of benzyne and furans. This unprecedented transformation provides moderate to excellent yields of novel alpha-formyl and alpha-acyl-2-indanones.