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Synthesis of 1-Tosyl-4,6-dihydrothieno[3,4-d]pyrazole 5,5-Dioxides as Precursors to Pyrazole Analogue of o-Quinodimethane

✍ Scribed by Tso, Hsi-Hwa; Chang, Yu-Ming; Tsay, Hongru


Book ID
115450067
Publisher
Taylor and Francis Group
Year
1996
Tongue
English
Weight
291 KB
Volume
26
Category
Article
ISSN
0039-7911

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## Abstract The synthesis of new planar derivatives characterized by the presence of a pyridothiopyranopyrazole or pyridothiopyranopyrimidine nucleus, carrying a substituted aryl group, is reported. The novel 1,4‐dihydropyrido[3β€²,2β€²:5,6]thiopyrano[4,3‐__c__]pyrazole derivatives were obtained by con