Synthesis 2005(18): 3179-3180  
DOI: 10.1055/s-2005-872177
PSP
© Georg Thieme Verlag Stuttgart · New York

Preparation of 3-Oxocyclohex-1-ene-1-carbonitrile

Fraser F. Fleming*, Zhiyu Zhang, Guoqing Wei
Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282, USA
Fax: +1(412)3965683; e-Mail: flemingf@duq.edu;
Further Information

Publication History

Received 3 May 2005
Publication Date:
17 August 2005 (online)

Abstract

Chromium trioxide oxidation of cyclohexenecarbonitrile efficiently provides analytically pure 3-oxocyclohex-1-ene-1-carbonitrile. The procedure is described in detail, providing a very reliable, one-step synthesis of a highly versatile oxonitrile.

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19

Assaying several different solvent mixtures identified CH2Cl2-hexanes (1.5:1) as optimal, although a stepped EtOAc-hexanes gradient (3:17, 1:4, 1:3) permitted isolation of 2.30 g of 2 in 64% yield.