Aldehyde to Ketone Homologation Enabled by Improved Access to Thioalkyl Phosphonium Salts
作者:Meghan Fragis、Jackson L. Deobald、Srinivas Dharavath、Jeffrey Scott、Jakob Magolan
DOI:10.1021/acs.orglett.1c01189
日期:2021.6.18
to competing redox chemistry with sulfoxides. Here we circumvent this problem to achieve a formal phosphine Pummerer reaction that offers thioalkyl phosphonium salts that, in turn, give rise to diverse vinyl sulfides via Wittig olefinations. Thirty vinyl sulfides are thus prepared from (alkylthioalkyl)triphenyl phosphonium salts and aldehydes. The hydrolysis of these vinyl sulfides offers an efficient
由于与亚砜的氧化还原化学竞争,膦以前不能用作 Pummerer 型亲核试剂。在这里,我们绕过这个问题以实现正式的膦普默勒反应,该反应提供硫代烷基鏻盐,进而通过 Wittig 烯化产生多种乙烯基硫化物。因此由(烷硫基烷基)三苯基鏻盐和醛制备三十种乙烯基硫化物。这些乙烯基硫化物的水解提供了醛到酮的高效且多功能的两步单碳同系化。