95921-60-1Relevant articles and documents
BRIDGEHEAD NITROGEN HETEROCYCLES FROM 2,4,6-TRIPHENYLPYRYLIUM CATION AND THIOSEMICARBAZIDE OR THIOCARBOHYDRAZIDE
Molina, P.,Tarraga, A,Serrano, C.
, p. 4901 - 4910 (2007/10/02)
2,4,6-Triphenylpyrylium with thiosemicarbazide and thiocarbohydrazide, gives 2-pyrazolines 3a and 3b which undergo cyclization yielding pyrazolopyrimidine 5 and pyrazolo-1,2,4-triazepine 7 derivatives, respectively.Reaction of 7 with phenacy