Thiophenol-Catalyzed Visible-Light Photoredox Decarboxylative Couplings of <i>N</i>-(Acetoxy)phthalimides
作者:Yunhe Jin、Haijun Yang、Hua Fu
DOI:10.1021/acs.orglett.6b03300
日期:2016.12.16
We have developed visible-light photoredox decarboxylative couplings of N-(acetoxy)phthalimides without an added photocatalyst in which simple and commercially available thiophenols are used as the effective organocatalysts, and 4-(trifluoromethyl)thiophenol shows optimal catalytic activity. Three representative decarboxylative examples were chosen including one amination and two C–C bond couplings
Facile Conversion of α‐Amino Acids into α‐Amino Phosphonates by Decarboxylative Phosphorylation using Visible‐Light Photocatalysis
作者:Dominik Reich、Adam Noble、Varinder K. Aggarwal
DOI:10.1002/anie.202207063
日期:2022.9.12
The facile conversion of α-amino acids to the respective α-amino phosphonates via their redox active esters using organophotoredox catalysis is reported. A novel photocatalytic phosphorylation combines radical–polar crossover with Arbuzov-type reactivity, providing an operationally simple, high yielding and general synthetic approach for the generation of α-amino phosphonates.
Catalyst-free decarboxylative cross-coupling of <i>N</i>-hydroxyphthalimide esters with <i>tert</i>-butyl 2-(trifluoromethyl)acrylate and its application
作者:Rui Li、Susu Yin、Lang Xie、Xuefei Li、Jia Jia、Liang Zhao、Chun-Yang He
DOI:10.1039/d3ob02103c
日期:——
method toward the facilesynthesis of CF3-containing amino acids through visible light promoted decarboxylative cross-coupling of a redox-active ester with tert-butyl 2-(trifluoromethyl)acrylate. The reaction was driven by the photochemical activity of electron donor–acceptor (EDA) complexes that were formed by the non-covalent interaction between a Hantzsch ester and a redox-active ester. The advantages
We present an electrochemical alkylation of azauracils using N-(acyloxy)phthalimides (NHPI esters) as readily available alkyl radical progenitors under metal- and additive-free conditions. Several azauracils are shown to undergo alkylation with an array of NHPI esters (1°, 2°, 3°, and sterically congested), providing the desired products in good to excellent yields. This operationally simple method