Generation of Alkoxycarbenium Ion Pools from Thioacetals and Applications to Glycosylation Chemistry
作者:Shinkiti Suzuki、Kouichi Matsumoto、Kohsuke Kawamura、Seiji Suga、Jun-ichi Yoshida
DOI:10.1021/ol048524h
日期:2004.10.1
[reaction: see text] Alkoxycarbenium ions have been generated and accumulated as "cation pools" by the low-temperature electrochemical oxidation of alpha-phenylthioethers. Although an unsuccessful attempt to accumulate glycosyl cations was made, a one-pot method for electrochemicalglycosylation, which involves anodic oxidation of thioglycosides to generate glycosyl cation equivalents followed by their reactions
Indirect Cation Pool Method. Rapid Generation of Alkoxycarbenium Ion Pools from Thioacetals
作者:Seiji Suga、Kouichi Matsumoto、Koji Ueoka、Jun-ichi Yoshida
DOI:10.1021/ja0625778
日期:2006.6.1
the electrochemical generation and accumulation of ArS(ArSSAr)+ at low temperature (step 1) and the follow-up reaction with a thioacetal to generate an alkoxycarbeniumion pool (step 2), which reacts with various carbonnucleophiles (step 3). Steps 2 and 3 are extremely fast. The electrogenerated ArS(ArSSAr)+ was well-characterized by 1H NMR and CSI-MS. The alkoxycarbeniumion pool generated by the