Abstract A practical transition-metal-free procedure for the synthesis of (E)-vinyl sulfones through the coupling of vinyl halides with sodium sulfinates in water is reported. The reaction is strongly influenced by the presence of acids, and the use of nBu 4 NBr promotes its efficiency.
![Benzene, [(1E)-2-bromoethenyl]结构式](https://image.chemsrc.com/caspic/029/588-72-7.png)
![Naphthalene,2-[[(1E)-2-phenylethenyl]sulfonyl]结构式](https://image.chemsrc.com/caspic/364/30166-84-8.png)
![Benzene,1-fluoro-4-[[(1E)-2-phenylethenyl]sulfonyl]结构式](https://image.chemsrc.com/caspic/326/30166-85-9.png)
