The mechanism of N - alkylation of weak N - H - acids by phase transfer catalysis [J ] . Tetrahedron Letters ,1985 ,26 (3) :297 - 300.Dehmlow EV, Thleser R. The mechanism of N-alkylation of weak N-H-acids by phase transfer catalysis[J].Tetrahedron Letters, 1985,26, (3): 297...
The alkylation of aromatic amines in the presence of inorganic bases is accelerated by a PT catalyst even if KHCO3 is the base. ArNRθ ions seem not to be involved. A novel type of mechanism for a PTC process is proposed.DOI: 10.1016/S0040-4039(01)80801-7 被...
DFT calculations have been carried out to study the mechanism of Cu(AcO)2-catalyzed N-alkylation of amino derivatives with primary alcohols. The calculations indicate that tBuOK is necessary for the generation of the active catalyst from Cu(AcO)2 and that the catalytic cycle involves three sequen...
N-alkylation1,6-dihydro-1,2,4,5-tetrazinelithium hydroxideunsymmetrical6-Methyl-3-phenyl-1,6-dihydro-1,2,4,5-tetrazine was stable in alkali solution at room temperature and decomposed gradually to form 1,2-dibenzylidenehydrazine. The plausible mechanism of the reaction is discussed. Because it...
C. Photoinduced, copper-catalyzed enantioconvergent alkylations of anilines by racemic tertiary electrophiles: synthesis and mechanism. J. Am. Chem. Soc. 144, 4550–4558 (2022). Article CAS PubMed PubMed Central Google Scholar Lee, H. et al. Investigation of the C–N bond-forming step in...
Scheme 4. Proposed mechanism(图片来源:J. Am. Chem. Soc.) 总结 舒兴中课题组报道了一例镍催化非活性烯烃与肟酯和碘代烷烃的不对称N-环化烷基化反应。该项工作揭示了杂环化应用于烯烃不对称还原双官能团化反应的可能性,实现了肟酯的高对映选择性aza-Heck 环化与交叉偶联过程,为手性二氢吡咯的合成提供了新的...
neoharriotta neohexane alkylation neohydroxyaspergillic neoisoliquritin neolamadoida neolanredr neolapin wave studio neolepisorus basicord neolithic age qijia c neolitsea konishii neolitsea konishii ha neolitsea oveatus f d neolitsea sutchuanens neoma new moon neomethymycin neomorphida neon cleaner...
Scheme 4. Proposed mechanism(图片来源:J. Am. Chem. Soc.) 总结 舒兴中课题组报道了一例镍催化非活性烯烃与肟酯和碘代烷烃的不对称N-环化烷基化反应。该项工作揭示了杂环化应用于烯烃不对称还原双官能团化反应的可能性,实现了肟酯的高...
neoglycoproteins neoheptane neohesperidin neohexane neohexane alkylation neohexanize neojusticin neoligans neoline neological neomembrane neohymen neomycin sul neomycin sulfate usp neomycin sulphate neomycin sulphate ora neon neonatal calf diarrhe neonicotine neopentane neopentyl alcohol neopentyl ethyl ether ...
Mono- and di-alkylation occur depending on the conditions. The method is of general applicability with the exception of C1 products (formamide or methanol). The mechanism is assumed to involve an aldehyde pathway.G.JennerSDOSJournal of Molecular Catalysis...