Tandem Reaction of Propargyl Alcohol and <i>N</i>-Sulfonylhydrazone: Synthesis of Dihydropyrazole and Its Utility in the Preparation of 3,3-Diarylacrylonitrile
作者:Yuanxun Zhu、Shan Wen、Guangwei Yin、Deng Hong、Ping Lu、Yanguang Wang
DOI:10.1021/ol201203g
日期:2011.7.15
An efficient and straightforward strategy for the synthesis of 4-methylene-1-(phenylsulfonyl)-4,5-dihydro-1H-pyrazole from propargyl alcohol and N-sulfonylhydrazone is described. N-Sulfonyl allenamide is postulated to be the key intermediate for this tandem transformation.
Synthesis, Characterization and Antimicrobial Activity of Thiazolo-oxazine Fused Heterocyclic Derivatives, Based on Benzene Sulfonyl Hydrazide
作者:Saisuryanarayana Donthukurthi、Devdatt J Patel、Rakesh I. Patel、Piyush J. Vyas
DOI:10.13005/ojc/390323
日期:2023.6.30
benzaldehyde derivatives. (1a-e) SBSZ were then condensed with mercapto acetic acid. The obtained resultant 2-thiazolidinone derivatives (2a-e) were then condensed with 5-nitro-2furfuralidine derivatives i.e. (Z)-N-(5-((5-nitrofuran-2-yl) methylene)-4-oxo-2-substitutedthiazolidin-3-yl) benzenesulfonamide (3a-e). These derivatives were further condensed with phenyl urea to yield fusedheterocyclic derivatives