作者:Christoph Kern、Jan Selau、Jan Streuff
DOI:10.1002/chem.202005400
日期:2021.4.7
building blocks from α‐sulfonyl nitriles, circumventing traditional base‐mediated α‐alkylation conditions and strong single electron donors. The reaction tolerates numerous functional groups including free alcohols, esters, amides, and it can be applied also to the α‐desulfonylation of ketones. In addition, a one‐pot desulfonylative alkylation is demonstrated. Preliminary mechanistic studies indicate a catalyst‐dependent
钛(III)催化的脱磺酰化可以从α-磺酰腈获得官能化的烷基腈结构单元,避开了传统的碱介导的α-烷基化条件和强单电子供体。该反应可耐受多种官能团,包括游离醇、酯、酰胺,也可应用于酮的 α-脱磺酰化。此外,还证明了一锅脱磺酰烷基化。初步机理研究表明,催化剂依赖性机制涉及均裂 C−S 裂解。