Phosphorus, Sulfur and Silicon and the Related Elements p. 330 - 339 (2010)
Update date:2022-09-26
Topics:
Dawood, Kamal M.
Kheder, Nabila A.
Ragab, Eman A.
Mohamed, Sanaa N.
3-Bromoacetyl-1,5-diphenyl-1H-pyrazole-4-carbonitrile (1) reacts with sodium benzenesulfinate to give the corresponding ketosulfone 2. Treatment of 2 with hydrazonoyl chlorides 3a,b gives the 3,3'-bipyrazoles 5a,b. Ketosulfone 2 reacts also with arylidenemalononitriles to give the pyrazolylpyridones 10a,b. The reaction of compound 2 with phenylisothiocyanate and potassium hydroxide and treating intermediate with hydrazonoyl halides and with -haloketones gives the 1,3,4-thiadiazoles 18a-c and thiophenes 21a-f, respectively.
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Doi:10.1021/ol100814a
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