Palladium‐Catalyzed Carbonylative Difunctionalization of C=N Bond of Azaarenes or Imines to Quinazolinones
作者:Xibing Zhou、Yongzheng Ding、Hanmin Huang
DOI:10.1002/asia.202000359
日期:2020.6.2
Supporting information for this article is given via a link at the end of the document. By intercepting the acylpalladium species with C=Nbond of azaarenes or imines other than free amines or alcohols, the difunctionalization of C=Nbond was established via palladium‐catalyzed carbonylation/nucleophilic addition sequence. This method is compatible with a diverse range of azaarenes and imines and allows
Selective Aerobic Oxidation of Alcohols to Aldehydes, Carboxylic Acids, and Imines Catalyzed by a Ag-NHC Complex
作者:Lei Han、Ping Xing、Biao Jiang
DOI:10.1021/ol501353q
日期:2014.7.3
Silver NHC catalysts have been developed for the selective oxidation of alcohols to aldehydes or carboxylic acids in the presence of BnMe3NOH or KOH under dry air. The aerobic oxidation conditions are mild, and the yield is excellent. Further tandem catalysis enables the one-pot synthesis of imines in excellent yield. Only 0.1 mol % of the catalyst is required.
We report here novel Cu(I) thiophene carbaldimine catalysts for the selective aerobic oxidation of primary alcohols to their corresponding aldehydes and various diols to lactones or lactols. In the presence of the in situ generated Cu(I) species, a persistent radical (2,2,6,6-tetramethylpiperdine-N-oxyl (TEMPO)) and N-methylimidazole (NMI) as an auxiliary ligand, the reaction proceeds under aerobic
Efficient Co‐Catalyzed Double Hydroboration of Nitriles: Application to One‐Pot Conversion of Nitriles to Aldimines
作者:Kristina A. Gudun、Ainur Slamova、Davit Hayrapetyan、Andrey Y. Khalimon
DOI:10.1002/chem.202000753
日期:2020.4.16
being unaffected by various common functional groups, such as alkenes, alkynes, secondary amines, ketones, esters, amides, carboxylic acids, pyridines, nitriles, and nitro compounds. The overall transformation represents a synthetically valuable approach to aldimines from nitriles and can be performed in a sequential one-pot manner, tolerating ester, lactone, carboxamide and unactivated alkene functionalities
Aerobic oxidative coupling of alcohols and amines towards imine formation by a dicopper(I,I) catalyst
作者:Indranil Dutta、Subhabrata De、Sudhir Yadav、Ranajit Mondol、Jitendra K. Bera
DOI:10.1016/j.jorganchem.2017.05.009
日期:2017.11
A dicopper(I,I) complex [Cu2(L1) (Cl)2] (1), bearing a Cu2Cl2 core spanned by a naphthyridine–diimine ligand is synthesized by the treatment of CuCl with 2,7–bis(N–mesitylmethylimino)–1,8–naphthyridine (L1). The catalytic efficacy of 1 is assessed for aerobic oxidative synthesis of imines from alcohols and amines. The title complex is found to be an excellent catalyst for a wide variety of alcohols