Oxidative phenol coupling with cupric-amine complexes
نویسندگان
چکیده
منابع مشابه
Organo-Iodine(III)-Catalyzed Oxidative Phenol-Arene and Phenol-Phenol Cross-Coupling Reaction.
The direct oxidative coupling reaction has been an attractive tool for environmentally benign chemistry. Reported herein is that the hypervalent iodine catalyzed oxidative metal-free cross-coupling reaction of phenols can be achieved using Oxone as a terminal oxidant in 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP). This method features a high efficiency and regioselectivity, as well as functional-g...
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The binding of cupric or zinc ion by sperm whale metmyoglobin appears to involve imidazole groups of histidyl residues (4, 5) that occur well removed from the NH2 terminus (6). The binding of each cupric ion by metmyoglobin is accompanied on the average by the displacement of one or more protons beyond that that may be borne by the imidazole group, presumably from peptide amide nitrogen atoms (...
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Three different orientations of non-blue, type 2 cupric complexes on DNA fibers are obtained from EPR data. The cupric complex of bleomycin, CuBlm, binds as described previously (Shields, H., McGlumphy,C., and Hamrick, P., J., Jr. (1982) Biochim. Biophys. Acta 697, 113-120), except possibly with more restricted motion. The square plane of CuBlm makes an angle of about 65 degrees with the fiber ...
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Titrations and spectral measurements of sperm whale metmyoglobin (2) and apomyoglobin (3) in the presence of cupric ion indicate that the metal ion may form chelates with imidazole groups and some other proton-bearing groups such as peptide amides. The titration and spectral properties of complexes of certain histidine-containing peptides have proved to be similar to those of the protein (4). A...
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Hydroxylated aromatic compounds (HACs) are considered to be primary pollutants in a wide variety of industrial wastewaters. Horseradish peroxidase (HRP) is suitable for the removal of these toxic substances. However, development of a mathematical model and optimization of the HRP-based treatment considering the economical issues by novel methods is a necessity. In the present study, optimizatio...
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ژورنال
عنوان ژورنال: Tetrahedron Letters
سال: 1977
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)83533-4