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Heteropolyacides as green and reusable catalysts for the synthesis of [3,4-b][1,3,4] thiadiazines


F. Hakimi
A. Hassanabadi
M. Tabatabaee
M. M. Heravi

Abstract

Synthesis of [3,4-b][1,3,4]thiadiazines from the condensation of 4-amino-6-methyl-3-thioxo-1,2,4-triazine-5(2H)-one (AMTTO) or 4-amino-1,4-dihydro-5-methyle-1,2,4-triazole-5-thione (AMTT) with phenacyl bromide in the presence of a catalytic amount of various heteropolyacids (HPAs) under refluxing conditions is reported.

 

KEY WORDS: Heteropolyacids, Phenacyl bromide, Heterocyclization, Thiadiazines

 

Bull. Chem. Soc. Ethiop. 2014, 28(1), 67-71.

DOI: http://dx.doi.org/10.4314/bcse.v28i1.8


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eISSN: 1726-801X
print ISSN: 1011-3924