Intramolecular Hydroamidation of <i>ortho</i>
-Vinyl Benzamides Promoted by Potassium <i>tert</i>
-Butoxide/<i>N,N</i>
-Dimethylformamide
作者:Zhen-yu Chen、Liang-yu Wu、Hai-sheng Fang、Ting Zhang、Zhi-feng Mao、Yong Zou、Xue-jing Zhang、Ming Yan
DOI:10.1002/adsc.201700369
日期:2017.11.23
An intramolecular hydroamidation of ortho-vinyl benzamides had been developed. The reaction was promoted efficiently by potassiumtert-butoxide and N,N-dimethylformamide without the need for strong oxidants or transition-metal catalysts. A series of dihydroisoquinolinones and 3-benzylisoindolinones were prepared in good to excellent yields. The new method is operationally simple, scalable, and tolerant
Palladium(ii)-catalysed tandem cyclisation of electron-deficient aromatic enynes
作者:Na Wu、Antonios Messinis、Andrei S. Batsanov、Zhen Yang、Andrew Whiting、Todd B. Marder
DOI:10.1039/c2cc35114e
日期:——
A novel palladium(II) catalysed tandem cyclisation of substituted 2-alkenylphenyl alkynones gives substituted 2-vinyl indenones and 6,5,6-fused tricyclic lactone skeletons (pyrones), in one-pot. Wagner-Meerwein-like rearrangements were observed which occur preferentially to conventional chloride-mediated chloropalladations of enynes.