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%).
The non-enzymatic kinetic resolution of diversely substituted primary propargylic amines is reported featuring a highly selective acetyl transfer using (1S,2S)-1 in conjunction with AliquatTM 336, affording the corresponding enantio-enriched N-acetylated propargylic amines with unprecedented levels of selectivity (s-factors of up to 193 at 50% conversion).
Synthesis of Cyclic Amine Boranes through Triazole-Gold(I)-Catalyzed Alkyne Hydroboration
作者:Qiaoyi Wang、Stephen E. Motika、Novruz G. Akhmedov、Jeffrey L. Petersen、Xiaodong Shi
DOI:10.1002/anie.201402614
日期:2014.5.19
The first catalytic alkyne hydroboration of propargyl amine boranecarbonitriles is accomplished with triazole‐AuI complexes. While the typical [L‐Au]+ species decomposes within minutes upon addition of amine boranecarbonitriles, the triazole‐modified gold catalysts (TA‐Au) remained active, and allowed the synthesis of 1,2‐BN‐cyclopentenes in one step with good to excellent yields. With good substrate