Disulfonation of terminal alkynes for 1,2-bisulfonylethenes
作者:Yu Wang、Kongshuang Tang、Zhaohong Liu、Yongquan Ning
DOI:10.1039/d0cc05849a
日期:——
A highly efficient and operationally simple method for the synthesis of 1,2-disulfonylethenes involving a hypervalent iodineI(III) reagent to promote disulfonation of terminal alkynes has been developed. This protocol provides a facile and practical pathway to selectively access (E)-1,2-disulfonylethenes that features good functional group compatibility, easily available starting materials, excellent
Acid-mediated sulfonylation of arylethynylene bromides with sodium arylsulfinates: synthesis of (E)-1,2-bis(arylsulfonyl)ethylenes and arylacetylenic sulfones
A solvent-dependent sulfonylation of arylethynylene bromides with sodium arylsulfinates has been developed. The (E)-1,2-bis(arylsulfonyl)ethylenes were formed in DMSO, while the arylacetylenic sulfones were obtained in toluene. Utilizing simple and readily available starting materials, the sulfonylation products were generated with good selectivities and yields without the need for a metal catalyst
Copper-Catalyzed Decarboxylative Disulfonylation of Alkynyl Carboxylic Acids with Sulfinic Acids
作者:Hong Fu、Jia-Qi Shang、Tao Yang、Yuehai Shen、Chuan-Zhu Gao、Ya-Min Li
DOI:10.1021/acs.orglett.7b03922
日期:2018.1.19
A copper-catalyzed decarboxylative disulfonylation of alkynyl carboxylic acids with sulfinicacids in aqueous solution has been developed. The reaction provides a straightforward and practical access to (E)-1,2-disulfonylethenes, which are important building blocks in synthetic organic chemistry, and exhibits a good functional group tolerance and excellent stereoselectivity. A possible mechanism for
Iodine-mediated photoinduced tuneable disulfonylation and sulfinylsulfonylation of alkynes with sodium arylsulfinates
作者:Mandapati Bhargava Reddy、Eoghan M. McGarrigle
DOI:10.1039/d3cc02011h
日期:——
disulfonylation and sulfinylsulfonylation of alkynes with sodium arylsulfinates under visible light irradiation has been developed. This photochemical protocol offers broad substrate scope of 1,2-bissulfonylethenes with high functional group tolerance and good yields under mild reaction conditions. In addition, it was found that β-sulfinyl alkenylsulfones can be obtained in the absence of base. It is