Cooperative catalysis of molybdenum with organocatalysts for distribution of products between amines and imines
作者:Di Wu、Qingqing Bu、Cheng Guo、Bin Dai、Ning Liu
DOI:10.1016/j.mcat.2021.111415
日期:2021.3
Multi-amino groups and nitrogen donors compound was discovered as an organocatalyst for N-alkylation of alcohols with amines in the presence of Mo(CO)6. The Mo(CO)6/organocatalyst binary system has shown to be a highly active catalyst for the N-alkylation reaction between alcohols and amines with excellent tolerance of variable starting materials bearing different functional groups. Of particular note
Site-Selective C–H Benzylation of Alkanes with N-Triftosylhydrazones Leading to Alkyl Aromatics
作者:Zhaohong Liu、Shanshan Cao、Weijie Yu、Jiayi Wu、Fanhua Yi、Edward A. Anderson、Xihe Bi
DOI:10.1016/j.chempr.2020.06.031
日期:2020.8
an abundant and valuable resource for transformation into value-added fine chemicals. However, selective functionalization of specific C(sp3)–H bonds in alkanes for alkyl-alkyl bond formation is a significant challenge because of their intrinsic inertness and the small differences in reactivity among various C(sp3)–H bonds. Here, we report a silver-catalyzed site-selective C(sp3)–H benzylation of simple
Esters, Including Triglycerides, and Hydrogen as Feedstocks for the Ruthenium-Catalyzed Direct N-Alkylation of Amines
作者:Rosa Adam、Jose R. Cabrero-Antonino、Kathrin Junge、Ralf Jackstell、Matthias Beller
DOI:10.1002/anie.201603681
日期:2016.9.5
for the direct N‐alkylation of amines with molecular hydrogen for the first time. A broad range of interesting and industrially relevant secondary and tertiary amines are obtained in the presence of an in situ formed Ru/Triphos complex. Notably, plant oil can be efficiently applied in this single‐step process. Moreover, a variety of other methyl esters can be used as N‐alkylationagents in the presence
Palladium-Catalyzed Amination of Aryl and Heteroaryl Tosylates at Room Temperature
作者:Tokutaro Ogata、John F. Hartwig
DOI:10.1021/ja805810p
日期:2008.10.22
Mild palladium-catalyzed aminations of aryltosylates and the first aminations of heteroaryltosylates are described. In the presence of the combination of L2Pd(0) (L = P(o-tol)3) and the hindered Josiphos ligand CyPF-t-Bu, a variety of primary alkylamines and arylamines react with both aryl and heteroaryltosylates at room temperature to form the corresponding secondary arylamines in high yields with
Controlling First-Row Catalysts: Amination of Aryl and Heteroaryl Chlorides and Bromides with Primary Aliphatic Amines Catalyzed by a BINAP-Ligated Single-Component Ni(0) Complex
作者:Shaozhong Ge、Rebecca A. Green、John F. Hartwig
DOI:10.1021/ja411911s
日期:2014.1.29
Mechanistic studies support the catalytic cycle involving a Ni(0)/Ni(II) couple for this nickel-catalyzed amination and are inconsistent with a Ni(I) halide intermediate. Monitoring the reaction mixture by 31P NMR spectroscopy identified (BINAP)Ni(η2-NC-Ph) as the resting state of the catalyst in the amination of both arylchlorides and bromides. Kineticstudies showed that the amination of aryl chlorides