New 1,3,4-thiadiazole derivatives from 1-benzylidenethiocarbonohydrazides and 3-Bromo-1-phenylprop-2-yn-1-one
摘要:
3-Bromo-1-phenylprop-2-yn-1-one reacted with 1-benzylidenethiocarbonohydrazones in acetic acid or acetonitrile at room temperature (reaction time 3 h) to give in good yields the corresponding benzaldehyde N'-(5-benzoylmethyl-1,3,4-thiadiazol-2-yl)hydrazone hydrobromides which were converted into the free bases by treatment with aqueous ammonia.