Synthesis 2006(21): 3625-3630  
DOI: 10.1055/s-2006-950287
PAPER
© Georg Thieme Verlag Stuttgart · New York

Catalyzed Enantioselective Synthesis of Allyl Alcohols from Aldehydes and Alkenylboronic Acids

Frank Schmidt, Jens Rudolph, Carsten Bolm*
Institut für Organische Chemie der RWTH Aachen, Landoltweg 1, 52074 Aachen, Germany
e-Mail: Carsten.Bolm@oc.rwth-aachen.de;
Further Information

Publication History

Received 3 August 2006
Publication Date:
09 October 2006 (online)

Abstract

Enantiomerically enriched (E)-allyl alcohols can be prepared in good yields by asymmetric alkenylation of aldehydes with alkenylboronic acids catalyzed by a chiral ferrocene-based agent.

16

In these studies, the NMR solvent forms a hydrogen bond to the hydroxy group of the product. The thus formed π-complex (see Figure [2] ) and the additional ring current effect lead to a shift of the NMR signals to higher ppm values.

17

NMR spectra were not recorded in CDCl3 due to decomposition of the product.