Synthesis of 1,3,4-thiadiazole derivatives by the reaction of thiosemicarbazide or its 1- or 4-substituted derivatives with some 1-bromo-2-acylacetylenes Academic Article uri icon

abstract

  • The reaction of thiosemicarbazide, 4-methyl-, 4-phenyl-, or 1-phenylthiosemicarbazides with 1-bromo-2-benzoyl(thenoyl-2)acetylenes in acetonitrile or glacial acetic acid yielded 2-acylmethylene- and 2-acylmethyl-5-amino-1,3,4-thiadiazoles. Heating of the latter in alcohol or aqueous alcohol gave the free bases.

publication date

  • January 1, 1990