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2-FORMYL-2,5-BIS(METHYLTHIO)-3H-PYRANE FROM 1,2-BIS(METHYLTHIO) -1,2-DICYANO-CYCLOBUTANE

โœ Scribed by Gundermann, Karl-Dietrich; Hnida, Paul-J.


Book ID
127015538
Publisher
Informa UK (Taylor & Francis)
Year
1979
Weight
83 KB
Volume
6
Category
Article
ISSN
0308-664X

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3-Methylthio-pyrano[4,3-c]pyrazol-4(2H)-
โœ Yu-Xin Li; You-Ming Wang; Xiao-Ping Yang; Su-Hua Wang; Zheng-Ming Li ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 72 KB ๐Ÿ‘ 1 views

## Abstract A useful synthesis of 3โ€methylthioโ€6โ€methylโ€pyrano[4,3โ€__c__]pyrazolโ€4(2__H__)โ€ones via 3โ€(bisโ€methylthio)methyleneโ€5,6โ€dihydroโ€6โ€alkyl(aryl)โ€2__H__โ€pyranโ€2,4โ€dione with hydrazine as well as methyl and phenyl hydrazines is described and the mechanism of the formation is discussed. ยฉ 200