Coupling between radical and anion in the outersphere oxidation of α-sulfonyl carbanions. Its role on the product distribution between dimeric olefin and disulfone
作者:Christian Amatore、Touriya El Moustafid、Christian Rolando、André Thiébault、Jean-Noël Verpeaux
DOI:10.1016/s0040-4020(01)87067-8
日期:1991.1
The electrochemical oxidation of α-sulfonyl carbanions is shown to involve a coupling reaction between the electrogenerated radical and the parent anionic species, both on preparative and kinetic grounds. Two routes compete for the further evolution of the ensuing anion radical: (i) a two step desulfonylation leading to the dimeric olefin, the product of an overall catalytic process, (ii) or further
研究表明,α-磺酰基碳负离子的电化学氧化在制备和动力学方面都涉及电生成的自由基与母体阴离子物种之间的偶联反应。两条途径竞争随后的阴离子基团的进一步发展:(i)两步脱磺酰化反应生成二聚烯烃,这是整个催化过程的产物;(ii)或进一步氧化生成二聚二砜。考察了该机制与α-磺酰基碳负离子过渡金属氧化的相关性。