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Preparation of hexahydrobenzo[f]isoquinolines using a vinylogous pictet-spengler cyclization
R R Cesati1, J A Katzenellenbogen
1Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Organic Letters
|November 14, 2000
Abstract:
A vinylogous Pictet-Spengler cyclization has been carried out using activated aldehydes, ketones, and alkynes to prepare a variety of substituted hexahydrobenzo[f]isoquinolines. A unique set of conditions was utilized to effect efficient cyclization with acid-sensitive electrophiles.