4-Arylhydrazinylidene-5-(polyfluoroalkyl) pyrazol-3-ones (4-AHPs) were found to be
obtained by the regiospecific cyclization of 2-arylhydrazinylidene-3-(polyfluoroalkyl)-3 …

A new series of twenty-one trifluoromethyl-containing (E)-N′-arylidene-1H-pyrazole-1-
carbohydrazides (4) was synthesized by the cyclocondensation reactions of six 3-alkyl …

The reaction of polyfluoroalkyl-containing 2-tolylhydrazinylidene-1, 3-diketones with 3-
aminopyrazoles depending on their structure can proceed as N, N-cyclization to form 5-R F …

3, 5-Dialkyl-4-hydroxybenzylhydrazine 1 reacted with hexafluoroacetylacetone and
trifluoroacetylacetone yielding the pyrazoles 2 bearing trifluoromethyl and/or methyl …

Abstract Condensation of 5, 7-dichloro-2-hydrazino-1, 3-benzoxazole 3 with different
aromatic acetophenones in methanol using catalytic amount of glacial acetic acid afforded …

Methyl-5, 6-dihydronaphtho [1′, 2′: 4, 5] thieno [2, 3-d] pyrimidin-11-yl) hydrazine (1) was
used as a precursor for preparation of some novel 1-(9-methyl-5, 6-dihydronaphtho [1 …

Reaction of 2-hydrazino-4-methylquinoline with a series of trifluoromethyl-β-diketones gives
3-substituted-5-hydroxy-1-(4-methylquinolin-2-yl)-5-trifluoromethyl-4, 5-dihydropyrazoles …

Proceeding from the fact that some widely used antibacterial preparations (furacilin,
furazolidone, ftivazide) contain hydrazone groups, we decided to synthesize a series of …

Chemoselective O‐alkylation of 1‐aryl‐3‐polyfluoroalkylpyrazol‐5‐oles under basic
conditions resulted in a series of 5‐alkoxypyrazoles (26 derivatives). They showed an …

In this effort, 2-arylhdrazononitriles were used as key synthons for the preparation of wide
variety of new, uniquely substituted heterocyclic substances. In addition, the results of …