N, N-Dialkyl-N′-Chlorosulfonyl Chloroformamidines in Heterocyclic Synthesis. V The Preparation of some Benzimidazo-Fused [1,2,4,6]Thiatriazine Dioxides

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Contents Vol 61(1)

doi:10.1071/CH07336

N, N-Dialkyl-N′-Chlorosulfonyl Chloroformamidines in Heterocyclic Synthesis. V* The Preparation of some Benzimidazo-Fused [1,2,4,6]Thiatriazine Dioxides

Teresa Cablewski ^A, Craig L. Francis ^A ^B, Andris J. Liepa ^A

^A CSIRO Molecular and Health Technologies, Clayton VIC 3168, Australia.
^B Corresponding author. Email: craig.francis@csiro.au





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Australian Journal of Chemistry 61(1) 59–65 http://dx.doi.org/10.1071/CH07336
Submitted: 21 September 2007 Accepted: 15 November 2007 Published online: 18 January 2008

Abstract

N,N-dialkyl-N′-chlorosulfonyl chloroformamidines 1 were treated with 2-aminobenzimidazoles 2 to give [1,2,4,6]thiatriazino[2,3-a]benzimidazole 1,1-dioxides 3 and [1,2,4,6]thiatriazino[4,3-a]benzimidazole 2,2-dioxides 4. Some N-alkyl-, N-acyl-, and N-sulfonyl-derivatives of 3 were prepared. These products are derivatives of rare heterocycles.