Alcaloïdes monoterp≐niques I : fonctionnalisations régiosélectives be la n-m≐thyl cyclopentadiényl-2 propylamine
作者:J.-P. Alazard、J.-L. Brayer、C. Thal
DOI:10.1016/s0040-4020(01)81968-2
日期:1990.1
The regioselective introduction of two carbons into the N-Methyl-2-cyclopentadienyl-propylamine framework 8 was achieved in two steps involving an N-formylation followed by an aminomethylenation of the β position of the cyclopentadiene ring by reaction with DMF acetal. Subsequent intramolecular Vilsmeier-Haack cyclisation produced the formyl-aminofulvene intermediate 9 which was converted to aminodiene