A straightforward and general method has been developed for the synthesis of phthalimide derivatives from 2-iodobenzamides and PPh3/I2/HCOOH in the presence of a catalytic amount of Pd(OAc)2. The reaction results demonstrate that PPh3/I2/HCOOH is a facile, efficient and safe CO source. The whole process is carried out in toluene at 80 °C and furnishes the desired products in good to excellent yields
已经开发了一种简单且通用的方法,用于在催化量的Pd(OAc)2存在下由2-碘联苯甲酰胺和PPh 3 / I 2 / HCOOH合成邻苯二甲酰亚胺衍生物。反应结果表明,PPh 3 / I 2 / HCOOH是一种简便,高效,安全的CO源。整个过程在80°C的甲苯中进行,并以优异的产率提供了所需的产品。
Palladium-catalysed asymmetric allylic substitution: synthesis of α- and β-amino acids
作者:Justin F. Bower、Roshan Jumnah、Andrew C. Williams、Jonathan M. J. Williams
DOI:10.1039/a606586d
日期:——
Methodology has been established for the formation of
enantiomerically enriched α-amino acids using palladium-catalysed
allylic amination. The formation of enantiomerically enriched
allylamines has been achieved with high enantioselectivity. Oxidative
cleavage of the allylamines provides arylglycine and glutamic acid
derivatives. Additionally, enantiomerically enriched β-amino acids
have been prepared in high enantiomeric excess. Palladium-catalysed
asymmetric allylic substitution is used as the key synthetic
transformation.
Photoredox-catalyzed radical–radical cross coupling of ketyl radicals with unstabilized primary alkyl radicals
作者:Shishen Feng、Hong Liu、Yan Li、Yewen Fang
DOI:10.1039/d4cc00620h
日期:2024.4.18
sterically hindered alcohols has been successfully developed via radical–radical coupling reactions enabled by mild and redox-neutral photocatalysis. With alkylsilicates as the radical precursors, a range of primaryalkylradicals bearing various functional groups could couple with a range of phthalimides and activated ketones.