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Matrix isolation akd IR spectroscopic study of the pyrolysis products of 2-methyl-3,4-diazapenta-1,3-diene. Cleavage of NN-boud in unsaturated azo compounds

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
27
Issue
48
Identifiers
DOI: 10.1016/s0040-4039(00)85337-x

Abstract

Abstract Under very low-pressure pyrolysis (VLPP) conditions the decomposition of 2-methyl-3,4-diazapenta-1,3-diene proceeds via: (a) homolytic cleavage of CN-bonds with the formation of methyl and 1-methylvinyl radicals ( 1 ); (b) cleavage of double NN-bond with the formation of N-methyl methyleneimine ( 3 ) and acetonitrile. A mechanism involving decomposition of the intermediate 1,4-diazacyclobutene has been suggested for (b).

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