TBAI/K<sub>2</sub>S<sub>2</sub>O<sub>8</sub>Initiated Radical Cyclization to Synthesize<i>β</i>- Arylsulfonyl Naphthalenes from Homopropargylic Alcohols and Sulfonyl Hydrazides
作者:Xiaodong Yang、Lianbiao Zhao、Bingxiang Yuan、Zhenjie Qi、Rulong Yan
DOI:10.1002/adsc.201700634
日期:2017.9.18
metal‐free radical addition method for the synthesis of β‐arylsulfonyl naphthalenes with homopropargylic alcohols and sulfonyl hydrazides has been developed. In this reaction, sulfonyl hydrazide is employed as the source of sulfonyl radical to produce the desired sulfone directly. There is the first example for homopropargylic alcohol through direct intramolecular addition of vinyl radical to arenes
开发了一种金属自由基加成法,用高炔丙醇和磺酰肼合成β-芳基磺酰基萘。在该反应中,使用磺酰肼作为磺酰基的来源,以直接生产所需的砜。第一个例子是通过由TBAI / K 2 S 2 O 8反应系统引发的乙烯基与磺酰基基团直接向芳烃中分子内加成乙烯基炔醇,并以中等收率产生所需的产物。
Fe-Catalyzed tandem cyclization for the synthesis of 3-nitrofurans from homopropargylic alcohols and Al(NO<sub>3</sub>)<sub>3</sub>·9H<sub>2</sub>O
作者:Ting Wang、Yong Jiang、Yanyan Wang、Rulong Yan
DOI:10.1039/c8ob01184b
日期:——
Al(NO3)3·9H2O as a nitro source for the synthesis of 3-nitrofurans from homopropargylic alcohols through Fe-catalyzed tandem cyclization is described. In this transformation, the substituted nitrofurans are obtained through nitration and cyclization. The substrate homopropargylic alcohols with different groups participate smoothly in this process and the desired substituted nitrofurans were obtained
A highly efficient, chemo-, and regioselective approach has been developed for the switchable synthesis of tetrasubstituted alkenyl sulfones and naphthyl sulfones from homopropargylic alcohols via sulfonylation/1,4-aryl migration and sulfonylation/cyclization. The present switchable processes are characterized by mild and metal-free conditions, high selectivities, good functionalgroup tolerance, the
Metal-free synthesis of 3-methylthiofurans with homopropargylic alcohols and DMTSM and their friction properties study
作者:Fengqi Fan、Siwei Shen、Kang Zhou、Yuling Wang、Chengcheng Zhang、Rulong Yan
DOI:10.1016/j.tetlet.2024.155157
日期:2024.7
A tandem sulfenylation/cyclization method to build the scaffold of methylthiofurans with homopropargylicalcohols and DMTSM has been developed. The DMTSM is employed as methylthiolation agent for the CS bond formation in this transformation. Various substituted homopropargylicalcohols proceed successfully and the corresponding 3-methylthiofurans are afforded in ideal yields under mild conditions.