A palladium-catalyzed radical Heck-type coupling reaction of cyclobutanone oxime esters with olefins under visible-light irradiation has been developed. The cyanoalkyl/Pd(I) hybrid species generated by selected ring-opening C–C bondcleavage of imino/Pd(I) species reacted smoothly with vinyl arenes, delivering the cyanoalkylation olefins under mild conditions. This elegant strategy has a broad scope
New entry to alicyclic amines via alkylative fragmentation of cyclic aminoaldehyde tosylhydrazones
作者:S Chandrasekhar、M.Venkat Reddy、G Rajaiah
DOI:10.1016/s0040-4039(00)01807-4
日期:2000.12
Tosylhydrazones of cyclic aminoaldehydes when exposed to aromatic and aliphatic Grignard reagents produce ring-opened acyclic unsaturated primary carbamates and carbamate alcohols in good yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
Photocatalytic Oxyamination of Alkenes: Copper(II) Salts as Terminal Oxidants in Photoredox Catalysis
作者:Nicholas L. Reed、Madeline I. Herman、Vladimir P. Miltchev、Tehshik P. Yoon
DOI:10.1021/acs.orglett.8b03345
日期:2018.11.16
electrophilic nitrogen atom donors is reported. Copper(II) is an inexpensive, practical, and uniquely effective terminaloxidant for this process. In contrast to oxygen, peroxides, and similar oxidants commonly utilized in non-photochemical oxidative methods, the use of copper(II) as a terminaloxidant in photoredox reactions avoids the formation of reactive heteroatom-centered radical intermediates that can