Convenient access to bicyclic and tricyclic diazenes.

J Org Chem

Department of Chemistry, University of Delaware, Newark, Delaware 19716, USA.

Published: December 2008

Heating the tosylhydrazone of an omega-alkenyl ketone or aldehyde to reflux in toluene in the presence of K(2)CO(3) delivered the bicyclic diazene. Irradiation of the diazene converted it to the cyclopropane. This appears to be a generally useful method for the construction of substituted cyclopentanes and cyclohexanes.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2765546PMC
http://dx.doi.org/10.1021/jo8017704DOI Listing

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