Results 211 to 220 of about 43,224 (237)

Some aspects of schiff bases of retinaldehyde

Experimental Eye Research, 1974
Abstract We have previously described an entity, which we have named Complex II, formed from retinaldehyde (RET) (any isomer) and ethanolamine-phosphoglyceride (EPG) which contains unsaturated fatty acid components. Complex II exhibits a 500-nm absorbance maximum in a spectrum similar to that of mammalian rhodopsin.
R G, Adams, N E, Sharpless, W H, Jennings   +2 more
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Schiff Base Complexes of Boron: Boron Complexes of Schiff Bases of 2,4-Pentanedione

Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry, 1978
Abstract Tetra-coordinated diacetoxy-boron Schiff base derivatives of the type (AcO)2B(SB) (where SB− is the anion of the corresponding monofunctional bidentate Schiff base, SBH) have been synthesized in almost quantitative yields and in a state of sufficient purity by the equimolar ratio reactions of boric acid and Schiff bases in acetic anhydride ...
H. B. Singh, J. P. Tandon
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Structure of a novel, macrocyclic Schiff base

Acta Crystallographica Section C Crystal Structure Communications, 1988
(E,E)-1,2,3,4,4a alpha, 12a beta-Hexahydro-7,7,10,- 10-tetramethyl-7H,10H-8,9-dithia-5,12-diazabenzo-cyclodec ene, C14H24N2S2, Mr = 284.49, monoclinic, P2(1)/n, a = 8.962 (1), b = 19.356 (3), c = 10.178 (1) A, beta = 114.49 (1) degrees, V = 1606.7 (7) A3, Z = 4, Dm = 1.21 (1), D chi = 1.176 Mg m-3, mu (Mo K alpha, lambda = 0.71073 A) = 0.31 mm-1, F(000)
P K, Bharadwaj, J A, Potenza, H J, Schugar   +2 more
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Schiff base compounds as artificial metalloenzymes

Colloids and Surfaces B: Biointerfaces, 2022
Much research has been done on traditional homogeneous metal catalysts and enzymatic catalysts, but recently a new class of hybrid catalysts called synthetic (artificial) metalloenzymes has been considered by researchers. Metalloenzymes as hybrid catalysts (host-guest systems) have been shown that combine the properties of a homogeneous and also ...
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Synthesis and Properties of Carbocyclic Schiff Bases.

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Yu. V. Popov, T. K. Korchagina, G. V. Chicherina, T. A. Ermakova   +3 more
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Schiff bases. Part III. Amine and ketone exchange reactions with Schiff bases

Journal of the Chemical Society C: Organic, 1968
Certain ketimines of the type R12 CN–CHR22 undergo amine exchange when heated with diphenylmethylamine to give the ketimines R12CN–CHPh2, which rearrange to the tautomers R12CH–NCPh2. These undergo a second amine exchange with the production of N-(diphenylmethylene)diphenylmethylamine.
Alexander Lawson, J. O. Stevens
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Synthesis of acyclic dinucleating Schiff base-pyridine and schiff base-phosphine ligands

Tetrahedron Letters, 1995
Abstract 5-tert-butyl-3-pyridyl-salicyaldehyde and 5-tert-butyl-3-diphenylphosphino-salicyaldehyde have been synthesized from 4-tert-butylphenol in good overall yields. Condensation of the salicyaldehydes with 2,3-diamino-2-3-dimethylbutane afforded the desired dinucleating Schiff base-pyridine and Schiff base-phosphine ligands respectively.
Fung Lam, Kin Shing Chan
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Polymeric Schiff Bases. III. Some Prototype Exchange Reactions of Schiff Bases

Journal of Macromolecular Science: Part A - Chemistry, 1967
Abstract The amine moiety in Schiff bases can be exchanged quantitatively by another amine to yield new Schiff bases if the volatility of the replacing amine is lower than the derived amine, thereby allowing the latter to distilled from the reaction mass. This amine exchange was shown to be quantitative also for diamines and di-Schiff bases. Similarly,
G. F. D'alelio, J. V. Crivello, T. Kurosaki, R. K. Schoenig   +3 more
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Antituberculous Schiff bases

Journal of Medicinal Chemistry, 1970
J R, Merchant, D S, Chothia
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Spectroscopy of non-aromatic Schiff bases

Journal of Photochemistry, 1981
Abstract The photoelectron and vapour phase UV absorption spectra of a number of non-conjugated and conjugated imines, their oximes and O -methyloximes were determined. The assignment of the bands of lowest frequency is discussed as well as the nature of the primary steps that may occur in the related excited states ((π,π * ), (n,π * and Rydberg ...
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