Formal Aza‐Wacker Cyclization by Tandem Electrochemical Oxidation and Copper Catalysis
作者:Xiangli Yi、Xile Hu
DOI:10.1002/anie.201814509
日期:2019.3.26
In oxidative electrochemical organic synthesis, radical intermediates are often oxidized to cations on the way to final product formation. Herein, we describe an approach to transform electrochemically generated organic radical intermediates into neutral products by reaction with a metalcatalyst. This approach combines electrochemical oxidation with Cu catalysis to effect formal aza‐Wacker cyclization
Asymmetric cyclization of 2-butenylene dicarbamates catalyzed by chiral ferrocenylphosphine-palladium complexes: Catalytic asymmetric synthesis of optically active 2-amino-3-butenols
作者:Tamio Hayashi、Akihiro Yamamoto、Yoshihiko Ito
DOI:10.1016/0040-4039(88)80027-3
日期:1988.1
Cyclization of 2-butenylenedicarbamates (RNHCOOCH2CH=CHCH2OCONHR: R = Ph, MeOC6H4, PhCHCH, etc.) in the presence of a palladium catalyst coordinated with chiral (hydroxyalkyl)-ferrocenylphosphine ligand gave opticallyactive 4-vinyl-2-oxazolidones (up to 77% ee) in high yields, which were hydrolyzed to opticallyactive2-amino-3-butenols.