A general process for the efficient synthesis of vinylsulfones has been developed using commercially available sulfinic acid sodium salts and dibromides. A variety of phenyl and methyl vinylsulfones have been formed in good yields, in the absence of any catalyst.
Synthesis, structure, and stability of cyclopentadienyl-(triphenylphosphine)(α-benzenesulfonylalkyl)nickel complexes
作者:M. Julia、H. Lauron、J.N. Verpeaux、Y. Jeannin、C. Bois
DOI:10.1016/0022-328x(88)87107-9
日期:1988.12
moderate yields by reaction of α-sulfonylcarbanions with Cp(PPh3)NiCl; the crystal structure of two of these complexes shows that the nicle atom is linked to the α-carbon of the sulfonyl group and there is no interactioin between the metal and the SO2 moiety. When their solution in benzene are warmed to 90°C, these complexes very cleanly yield the corresponding α,β-unsaturated sulfone (E isomer). An efficient
A photocatalyst-free aqueous-phase hydrosulfonylation of alkenes and alkynes with sulfonyl chlorides is described. The reaction proceeds efficiently under visible light irradiation in the presence of (TMS)3SiH and features mild conditions, broad substrate scope and excellent functional-group compatibility, offering a convenient and sustainable method for the synthesis of sulfones.