The intermolecular aromatic substitution of N,N-disubstituted anilines with diazo esters is achieved under mild conditions in the presence of a catalytic amount of copper(II) triflate (up to 89 % yield). The scope and limitations regarding substrates, diazo esters, and ligands in this reaction are described.
N,N-二取代苯胺与重氮酯的分子间芳香取代是在温和条件下在催化量的三氟甲磺酸铜 (II) 存在下实现的(产率高达 89%)。描述了该反应中有关底物、重氮酯和配体的范围和限制。
Facile construction of three-membered rings via benzyne-promoted Darzens-type reaction of tertiary amines
作者:Ya-Nan Xu、Shi-Kai Tian
DOI:10.1016/j.tet.2018.11.065
日期:2019.3
A range of tertiary amines having electron-withdrawing groups were activated in situ by benzyne, generated from 2-(trimethylsilyl)phenyl triflate and a fluoride source, and participated in the Darzens-type reaction with carbonyl compounds, imines, and vinyl ketones to afford structurally diverse epoxides, aziridines, and cyclopropanes, respectively, in moderate to excellent yields with high trans-selectivity
A New Strategy for the Construction of α-Amino Acid Esters via Decarboxylation
作者:Jie Zhang、Jiewen Jiang、Yuling Li、Yun Zhao、Xiaobing Wan
DOI:10.1021/ol401139m
日期:2013.7.5
A new alpha-amino acid esters formation reaction has been developed via decarboxylation. The methodology is distinguished by its practical novelty in terms of the readily accessible starting materials, environmentally benign reaction conditions and waste streams, and wide substrate scope.