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Reaction of N-Methyl-5-tributylstannyl-4-fluoro-1H-pyrazole and Its Application to N-Methyl-chromeno[2,3-d]pyrazol-9-one Synthesis

✍ Scribed by Hanamoto, Takeshi; Hashimoto, Eri; Miura, Masayuki; Furuno, Hiroshi; Inanaga, Junji

Book ID: 111688946
Publisher: American Chemical Society
Year: 2008
Tongue: English
Weight: 143 KB
Volume: 73
Category: Article
ISSN: 0022-3263
DOI: 10.1021/jo800431t

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ChemInform Abstract: Reaction of N-Methy

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## Abstract Various [5,6]pyrano[2,3‐__c__]pyrazol‐4(1__H__)‐thiones were synthesized in high yields by treatment of the corresponding [5,6]pyrano[2,3‐__c__]pyrazol‐4(1__H__)‐ones with Lawesson's reagent. Detailed NMR spectroscopic studies were undertaken of the title compounds. Complete and unambig