Acid-catalysed cyclisation of αβ,γδ-unsaturated p-tolylsulphonylhydrazones to 3,4-dihydro-2-tolylsulphonyl-1,2-diazepines
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- p. 1640-1645
- https://doi.org/10.1039/p19790001640
Abstract
The acid-catalysed reactions of some substituted 2,4-dienones with p-tolylsulphonylhydrazine give 3,4-dihydro-2-tosyl-1,2-diazepines (8); other 2,4-dienones give only the p-tolylsulphonylhydrazones. The dependence of the mode of reaction on the substituents on the dienone, and the role of the acid in promoting the cyclisation have been investigated.Keywords
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