Regiospecific synthesis of α-ketoacetals by rearrangement of α-bromo-α-fluoroketones
作者:Norbert De Kimpe、Roland Verhé、Laurent De Buyck、N. Schamp
DOI:10.1016/0040-4039(80)80018-9
日期:1980.1
α-Ketoacetals, derived from alkylaryl-α-diones and with acetalized benzoyl moiety, were synthesized by alkoxide induced rearrangement of α-bromo-α-fluoroalkylarylketones.
Visible‐Light‐Enabled Enantioconvergent Synthesis of α‐Amino Acid Derivatives via Synergistic Brønsted Acid/Photoredox Catalysis
作者:Chao Che、Yi‐Nan Li、Xiang Cheng、Yi‐Nan Lu、Chun‐Jiang Wang
DOI:10.1002/anie.202012909
日期:2021.2.23
An unprecedented radical cross‐coupling reaction was achieved between glycine esters and racemic α‐bromoketones catalyzed by synergistic Brønsted acid/photoredox catalysis, thus serving as an efficient platform for the synthesis of highly valuable enantioenriched unnatural α‐aminoacid derivatives. This dual catalysis provides a powerful capability to control the reactive radical intermediate and iminium
Synthesis of 3-Substituted 2-Fluoro- and 2,2-Difluoroaziridines
作者:Eva Van Hende、Guido Verniest、Riccardo Surmont、Norbert De Kimpe
DOI:10.1021/ol071127x
日期:2007.7.1
A new route for the synthesis of stable 3-alkyl- and 3-aryl-2(,2)-(di)fluoroaziridines was developed by hydride reduction of novel alpha-bromo- and alpha-chloro-alpha(,alpha)-(di)fluoroketimines and subsequent ring closure of beta-fluorinated beta-chloro- and beta-bromoamines. This is the first report on the synthesis of 2,2-difluoroaziridines sensu stricto.