Synlett 2006(3): 0427-0430  
DOI: 10.1055/s-2006-926244
LETTER
© Georg Thieme Verlag Stuttgart · New York

Preparation of the Neolignan Natural Product Grossamide by a Continuous-Flow Process

Ian R. Baxendale, Charlotte M. Griffiths-Jones, Steven V. Ley*, Geoffrey K. Tranmer
Innovative Technology Centre, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
Fax: +44(1223)336442; e-Mail: svl1000@cam.ac.uk;
Further Information

Publication History

Received 12 December 2005
Publication Date:
06 February 2006 (online)

Abstract

This article describes the first enantioselective total synthesis of 2-aryl-2,3-dihydro-3-benzofurancarboxyamide neolignan, grossamide (1) using a fully automated and scalable flow reactor.

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With DMF followed by THF.

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The exact amount was highly dependant on flow rates, scale and specific dimensions of the column. Optimum conditions could be rapidly determined in an automated screening fashion.

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The columns could be efficiently recycled up to five times before any noticeable decrease in reactivity was observed.