6126-11-0Relevant academic research and scientific papers
Zinc-promoted cyclization of tosylhydrazones and 2-(dimethylamino)malononitrile: An efficient strategy for the synthesis of substituted 1-tosyl-1: H -pyrazoles
Zhang, Bang-Hong,Lei, Lin-Sheng,Liu, Si-Zhan,Mou, Xue-Qing,Liu, Wei-Ting,Wang, Shao-Hua,Wang, Jie,Bao, Wen,Zhang, Kun
supporting information, p. 8545 - 8548 (2017/08/04)
A Zn(OTf)2-promoted cyclization reaction of tosylhydrazones with 2-(dimethylamino)malononitrile has been successfully developed providing an efficient strategy for the synthesis of substituted 1-tosyl-1H-pyrazoles.
Base-promoted ecofriendly synthesis of trisubstituted pyrazoles from α,β-alkynyl N-tosylhydrazones under metal- and solvent-free conditions
Li, Ning,Li, Baoguo,Chen, Shufeng
supporting information, p. 1597 - 1601 (2016/06/14)
A simple and green method is described for the synthesis of trisubstituted pyrazoles from α,β-alkynyl N-tosylhydrazones under metal- and solvent-free conditions. Notably, only diisopropylamine is required as a promoter, and the reaction can be easily perf
A new synthesis of pyrazoles through a Lewis acid catalyzed union of 3-ethoxycyclobutanones with monosubstituted hydrazines
Shan, Gang,Liu, Pengfei,Rao, Yu
supporting information; experimental part, p. 1746 - 1749 (2011/05/12)
A new efficient and convenient approach toward the synthesis of pyrazoles is described. Through a Lewis acid catalyzed union of 3-ethoxycyclobutanones with monosubstituted hydrazines, a variety of pyrazole derivatives were prepared readily at ambient temp
