An Enzymatic Platform for Primary Amination of 1-Aryl-2-alkyl Alkynes
作者:Zhen Liu、Zi-Yang Qin、Ledong Zhu、Soumitra V. Athavale、Arkajyoti Sengupta、Zhi-Jun Jia、Marc Garcia-Borràs、K. N. Houk、Frances H. Arnold
DOI:10.1021/jacs.1c11340
日期:2022.1.12
challenging. Here, we report an enzymatic platform for the enantioselective propargylic amination of alkynes using a hydroxylamine derivative as the nitrene precursor. Cytochrome P450 variant PA-G8 catalyzing this transformation was identified after eight rounds of directed evolution. A variety of 1-aryl-2-alkyl alkynes are accepted by PA-G8, including those bearing heteroaromatic rings. This biocatalytic
Benzene-1,3,5-triyl Triformate (TFBen)-Promoted Palladium-Catalyzed Carbonylative Synthesis of 2-Oxo-2,5-dihydropyrroles from Propargyl Amines
作者:Jun Ying、Zhengjie Le、Xiao-Feng Wu
DOI:10.1021/acs.orglett.9b04147
日期:2020.1.3
In this letter, we developed a palladium-catalyzed procedure for the cyclocarbonylation of propargyl amines. Benzene-1,3,5-triyl triformate (TFBen) has been explored as the CO source and also as the key promotor. Various substituted 2-oxo-dihydropyrroles were produced in a facile manner in good yields (up to 90%).
Novel Method of Tetramic Acid Synthesis: Silver-Catalyzed Carbon Dioxide Incorporation into Propargylic Amine and Intramolecular Rearrangement
作者:Tomonobu Ishida、Ryo Kobayashi、Tohru Yamada
DOI:10.1021/ol500806u
日期:2014.5.2
starting materials and harsh heating conditions in basic media. The present report provides a conceptually new synthetic strategy for the synthesis of tetramic acid derivatives from easily available propargylicamines and carbon dioxide with a silver salt and DBU under mild reaction conditions.
The silver-catalyzedcarbondioxideincorporation reaction into various propargylic amines proceeded under mild reaction conditions to obtain the corresponding oxazolidinone derivatives in high to ...
银催化的二氧化碳掺入各种炔丙胺反应在温和的反应条件下进行,得到相应的恶唑烷酮衍生物。
Silver-Catalyzed Carbon Dioxide Incorporation and Rearrangement on Propargylic Derivatives
A silver/DBU catalyst system was developed for the effective synthesis of cyclic carbonate and oxazolidinone from the reaction of CO2 with propargylicalcohols and propargylic amines, respectively,...
开发了一种银/DBU 催化剂体系,用于通过 CO2 分别与炔丙醇和炔丙胺反应有效合成环状碳酸酯和恶唑烷酮,...