Synthesis 2005(16): 2739-2743  
DOI: 10.1055/s-2005-872124
PAPER
© Georg Thieme Verlag Stuttgart · New York

Synthesis of cis-Isoquinolonic Acids Containing Boronate Esters

Haiwen Zhanga, Christopher M. Vogelsa, Susan L. Wheatona, Felix J. Baerlocherb, Andreas Deckenc, Stephen A. Westcott*a
a Department of Chemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
Fax: +1(506)3642313; e-Mail: swestcott@mta.ca;
b Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada
c Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
Further Information

Publication History

Received 10 April 2005
Publication Date:
04 August 2005 (online)

Abstract

The addition of homophthalic anhydride to aldimines derived from pinacolation of 4-formylphenylboronic acid selectively gives the corresponding cis-isoquinolonic acids. Reactions proceed without the need for an additional Lewis acid catalyst at room temperature.