The thermal reactions of fluoroalkanesulfonyl azides RfCF2SO2N3 1 with nitrobenzene and its derivatives XC6H4NO2 (X=H, F, Cl, CF3) gave the unexpected N-fluoroalkaneacyl anilides RfCONHC6H4X (X=H, Cl, F, CF3) in addition to fluoroalkanesulfonyl amides RfCF2SO2NH2. Under the same reaction conditions, however, nitrobenzene containing an electron-donating group RC6H4NO2 (R=CH3, OCH3) reacted with 1 affording
氟代烷烃磺酰基叠氮化物R f CF 2 SO 2 N 3 1与硝基苯及其衍生物XC 6 H 4 NO 2(X = H,F,Cl,CF 3)的热反应产生了出乎意料的N-氟代烷烃酰基苯胺R f CONHC 6 H除了氟代烷磺酰基酰胺R f CF 2 SO 2 NH 2之外,还包括4 X(X = H,Cl,F,CF 3)。然而,在相同的反应条件下,含给电子基团RC 6 H的硝基苯4 NO 2(R = CH 3,OCH 3)与1反应,得到相应的N-氟链烷磺酰基苯甲酸酯R f CF 2 SO 2 NHC 6 H 3(NO 2)R。其他贫电子苯衍生物,例如苯甲醛,苯甲酸酯和苯乙酮C 6 H 5 Y(Y = CHO,COCH 3,CO 2 CH 3)均得到间位取代的N-氟链烷磺酰基苯甲酸酯R f CF 2 SO2 NHC 6 H ^ 4 Y.
Photocatalytic amidation and esterification with perfluoroalkyl iodide
作者:Yelan Xiao、Yuen-Kiu Chun、Shun-Cheung Cheng、Chi-On Ng、Man-Kit Tse、Ngai-Yu Lei、Ruoyang Liu、Chi-Chiu Ko
DOI:10.1039/d0cy01419b
日期:——
The successful generation of perfluoroalkyl radicals (Rf˙) through photoredox catalysis has inspired us to investigate the preparation of various organofluorine species. In this work, visible light-induced photocatalytic reactions for the preparation of perfluoroalkyl amides and esters from the corresponding amines and alcohols using different types of triplet emitters as photocatalysts have been studied