The two ligands and series of complexes feature the N 2 S 2 coordination environment found at the active site of Ni superoxide dismutase and differ only in the identity of one of the N donors (imine vs. amide). Those with the amide N donor contain the exact donor set present in reduced...
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摘要: with a compound of the formula (II) or diketene in the presence of a tertiary organic base.收藏 引用 批量引用 报错 分享 全部来源 求助全文 Google Patents 相似文献 参考文献 引证文献Synthesis and polymerization behavior of 2,3-dihydro-1,4-dioxin-2-one and its 3-methyl derivative The ...
Prototropic tautomerism (amide-iminol and amine-imine tautomerism in DNA bases) is one of the phenomena responsible for spontaneous point mutations. During tautomeric interconversion, it is sufficient that a proton is transferred from one to the other conjugated site in DNA nitrogen bases that their...
transformations. It should be noted that the results of the QSAR analyses agree with the notion that the aromatic amines require metabolic activation to become carcinogenic[1]. For amines and amides, this typically involves an initialN-oxidation toN-hydroxylamine andN-hydroxylamide. In particular, ...
Next, the scope of β-ketoamides was evaluated for this process (Fig. 3B). For acylic β-ketoamides, the yields were decreased slightly but with significantly higher dr comparing with cyclic β-ketoamide (Fig. 3B, 4k–l vs 4m–p). To our delight, cyclic β-ketoamides turned to be...
Example prototropic tautomers include ketone-enol pairs, amide-imidic acid pairs, lactam-lactim pairs, enamine-imine pairs, and annular forms where a proton can occupy two or more positions of a heterocyclic system, e.g., 1H- and 3H-imidazole, 1H-, 2H- and 4H-1,2,4-triazole, 1H- ...
(dipheny phosphno)ferrocene EDTA for ethyenediaminetetraacet acid: Et for ethyl EtOH for ethanol EtOAc for ethy acetate: HPLC for high pressure liquid hromatography iPA for isopropyl alcohol IPAC or IPAc for isopropyl acetate: LDA for ithium diisopropylamide NEBS for N-bromosuccininde; NIS ...
Amine transaminases (ATAs), next to amine oxidases [7,8], imine reductases [9,10], or lipases [11,12], are attracting growing interest for large-scale synthesis of (chiral) amines because they offer high enantioselectivity, internal cofactor regeneration, and can accept a variety of ...
The N1s signal was fitted by a sum of three components corresponding to nitride/imine (N=C ~398.2 ± 0.2 eV), the amine group (NHx=1,2 ~ 399.1 ± 0.1 eV) and amide/nitrile group (N-C=O/C≡N ~ 400.2 ± 0.1 eV). The film stability in water was...