propargyl groups under CO2 allows the synthesis of benzofuranacetic acid derivatives. This novel intramolecular cyclization–carboxylation reaction is carried out in single-compartment cells and is catalyzed by [Ni(cyclam)Br2].
一系列含有烯丙基和炔丙基的 2-卤代芳基醚在 CO2 下的电化学还原允许合成苯并呋喃乙酸衍生物。这种新型的分子内环化-羧化反应在单室细胞中进行,并由 [Ni(cyclam)Br2] 催化。
An efficient chemoselective etherification of phenols in polyfunctional aromatic compounds
作者:Jyoti Pandey、Mridul Mishra、Surendra Singh Bisht、Anindra Sharma、Rama P. Tripathi
DOI:10.1016/j.tetlet.2007.11.129
日期:2008.1
A simple and efficient chemoselective alkylation of phenols in polyfunctional aromatic compounds with different alkyl halides in the presence of K2CO3/TBAB is reported. The method is successful with various hydroxy aromatic acids or oximes possessing other functional groups. (c) 2007 Elsevier Ltd. All rights reserved.
Overcoming the Deallylation Problem: Palladium(II)-Catalyzed Chemo-, Regio-, and Stereoselective Allylic Oxidation of Aryl Allyl Ether, Amine, and Amino Acids
作者:Kartic Manna、Hasina Mamataj Begam、Krishanu Samanta、Ranjan Jana
DOI:10.1021/acs.orglett.0c02465
日期:2020.10.2
We report herein a Pd(II)/bis-sulfoxide-catalyzed intramolecular allylic C–H acetoxylation of aryl allyl ether, amine, and amino acids with the retention of a labile allyl moiety. Mechanistically, the reaction proceeds through a distinct double-bond isomerization from the allylic to the vinylic position followed by intramolecular carboxypalladation and the β-hydride elimination pathway. For the first