A synthetic strategy based on sequential application of aza-Claisenrearrangement and ring-closing metathesis reaction as key steps has been developed for the synthesis of various 1-benzazepine derivatives of pharmaceutical relevance.
The aza-Cope rearrangement of N-allylanilines is described. The use of BF3 center dot OEt2 and microwave irradiation allows to run the transformation under mild conditions and in reaction times of minutes. (c) 2008 Published by Elsevier Ltd.