Interweaving Visible‐Light and Iron Catalysis for Nitrene Formation and Transformation with Dioxazolones
作者:Jing‐Jing Tang、Xiaoqiang Yu、Yi Wang、Yoshinori Yamamoto、Ming Bao
DOI:10.1002/anie.202016234
日期:2021.7.19
transfer reactions with dioxazolones for intermolecular C(sp3)-N, N=S, and N=P bond formation are described. These reactions occur with exogenous-ligand-free process and feature satisfactory to excellent yields (up to 99 %), an ample substrate scope (109 examples) under mild reaction conditions. In contrast to intramolecular C−H amidations strategies, an intermolecular regioselective C−H amidation via
Durch Kondensation von Benzoylchlorid und Hippursäureester mitHilfevon Natrium ist uns die Synthese einer Verbindung gelungen, vonder wir annehmen, dass es sich um O-Benzoylhippursäureester handelt.
A practical synthesis of α-acylamino-β-keto-esters: Acylation of alkyl hydrogen (acylamino)malonates via the MgCl2/R3N base system
作者:Damian J. Krysan
DOI:10.1016/0040-4039(96)00581-3
日期:1996.5
An operationally simple procedure for the synthesis of α-acylamino-β-keto-esters has been devised using a MgCl2/R3Nbasesystem to generate the magnesium enolates of a series of alkylhydrogen (acylamino)malonates. These reagents smoothly react at 0 °C with a variety of acid chlorides to give α-acylamino-β-keto-esters in good to excellent yields. In addition to being quite convenient and versatile
已经设计了使用MgCl 2 / R 3 N碱系统合成α-酰基氨基-β-酮基酯的操作简单的程序,以生成一系列烷基氢(酰基氨基)丙二酸烯醇镁。这些试剂可在0°C下与各种酰氯平稳反应,从而以良好或极佳的收率得到α-酰基氨基-β-酮酸酯。除了对于小规模制备非常方便和通用之外,该方法还应该非常适合于这种重要分子类别的大规模合成。