Regioselective Claisen rearrangements in indoles
Abstract
Heating the 6-allyloxyindoles (3), readily prepared from the benzaldehydes (1), gives the corresponding 7-allylindoles (4) by regioselective Claisen rearrangement; the 7-linalylindole (10) is prepared from 4-geranyloxybenzaldehyde by a similar sequence.