Efficient synthesis of tertiary amines from secondary amines
作者:Michio Kurosu、Sevendu Sekhar Dey、Dean C. Crick
DOI:10.1016/j.tetlet.2006.05.038
日期:2006.7
N-alkylations of secondaryamines have been developed. By using DIAD and TPP (or PS-TPP) a variety of secondaryamines can be converted to the corresponding tertiaryamines in good to excellent yields with diverse alkylhalides; no formation of quaternary amine salts are observed. These protocols are amenable to combinatorial chemistry libraries, and are also useful for the syntheses of secondaryamines by an
Base-Catalyzed Anti-Markovnikov Hydroamination of Vinylarenes – Scope, Limitations and Computational Studies
作者:Patricia Horrillo-Martínez、Kai C. Hultzsch、Adrià Gil、Vicenç Branchadell
DOI:10.1002/ejoc.200700147
日期:2007.7
The hydroamination of vinylarenes with primary and secondary amines was studied with catalytic amounts as low as 2 mol-% of LiN(SiMe3)2/TMEDA. Reactions proceeded readily at 120 °C in the absence of solvent to give selective anti-Markovnikov addition. Slow addition was observed at 25 °C with either electron-deficient p-chlorostyrene or secondary cyclic amines such as pyrrolidine, piperidine, or morpholine
Synthesis of Symmetric and Unsymmetric Secondary Amines from the Ligand-Promoted Ruthenium-Catalyzed Deaminative Coupling Reaction of Primary Amines
作者:Pandula T. Kirinde Arachchige、Hanbin Lee、Chae S. Yi
DOI:10.1021/acs.joc.8b00649
日期:2018.5.4
found to be effective for the direct deaminative coupling of two primaryamines to form secondary amines. The catalyst 1/L1 was highly chemoselective for promoting the coupling of two different primaryamines to afford unsymmetric secondary amines. The analogous coupling of aniline with primaryamines formed aryl-substituted secondary amines. The treatment of aniline-d7 with 4-methoxybenzylamine led to