An efficient and green method for regio- and chemo-selective Friedel–Crafts acylations using a deep eutectic solvent ([CholineCl][ZnCl<sub>2</sub>]<sub>3</sub>)
作者:Phuong Hoang Tran、Hai Truong Nguyen、Poul Erik Hansen、Thach Ngoc Le
DOI:10.1039/c6ra03551e
日期:——
and ZnCl2, has been used as a dual function catalyst and green solvent for the Friedel–Crafts acylation of aromatic compounds instead of using the moisture-sensitive Lewisacids and volatile organic solvents. The reactions are performed with high yields under microwave irradiation with short reaction times for the synthesis of ketones. Interestingly, indole derivatives are regioselectively acylated in
photocatalytic system using a bisphosphonium catalyst and a cobalt catalyst has been developed, enabling the selectiveoxidation of benzylic alcohols under oxidant-free and environmentally benign conditions. High efficiencies have been obtained for a variety of alcohol substrates, and exclusive selectivity for aldehyde products has been achieved across the board. Furthermore, this photocatalytic system proved
Gold‐Catalyzed 1,2‐Dicarbofunctionalization of Alkynes with Organohalides**
作者:Shashank P. Sancheti、Yukta Singh、Manoj V. Mane、Nitin T. Patil
DOI:10.1002/anie.202310493
日期:2023.10.16
The first report of 1,2-dicarbofunctionalization of alkynes using organohalides as coupling partners in the field of goldcatalysis has been presented. Mechanistic investigations, including NMR, tandem mass spectrometry and DFT studies, reveal that an oxidative addition/carbophilic activation pathway is preferred over the migratory insertion/cis-trans isomerization pathway.
[EN] PARP INHIBITOR CONTAINING PHTHALAZIN-1(2H)-ONE STRUCTURE, PREPARATION METHOD THEREFOR, AND PHARMACEUTICAL USE THEREOF<br/>[FR] INHIBITEUR DE PARP CONTENANT UNE STRUCTURE DE PHTALAZIN-1(2H)-ONE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION PHARMACEUTIQUE<br/>[ZH] 含有酞嗪-1(2H)-酮结构的PARP抑制剂、其制法及医药用途