Results 101 to 110 of about 81,520 (144)
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ortho-Selective Dearomative [2π + 2σ] Photocycloadditions of Bicyclic Aza-Arenes.
Journal of the American Chemical Society, 2023Dearomative photocycloadditions are valuable chemical transformations, serving as an efficient platform to create three-dimensional molecular complexity.
Roman Kleinmans +9 more
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Solvent Effects in Optical Spectra of ortho-Aminobenzoic Acid Derivatives
Journal of Fluorescence, 2009We investigated three amino derivatives of ortho-aminobenzoic or anthranilic acid (o-Abz): a) 2-Amino-benzamide (AbzNH2); b) 2-Amino-N-methyl-benzamide (AbzNHCH3) and c) 2-Amino-N-N'-dimethyl-bezamide (AbzNH(CH3)2), see Scheme 1. We describe the results of ab-initio calculations on the structural characteristics of the compounds and experimental ...
Takara, Marcelo +4 more
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NMR spin–spin coupling constants in microhydrated ortho-aminobenzoic acid
Molecular Physics, 2014The influence of the hydrogen-bond formation on the NMR spin–spin coupling constants, including the Fermi contact, the diamagnetic spin–orbit, the paramagnetic spin–orbit and the spin dipole term, has been investigated for the ortho-aminobenzoic acid microhydrated with up to three water molecules.
Angsula Ghosh, Puspitapallab Chaudhuri
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General and Specific Solvent Effects in Optical Spectra of ortho-Aminobenzoic Acid
Journal of Fluorescence, 2005We describe studies about solvent effects on the absorption and emission properties of o-aminobenzoic acid (o-Abz), interpreting the results within the framework of general and specific solute-solvent interactions. Measurements were performed in several solvents and analysis of the absorption and emission wavelengths were made based on Lippert's model ...
Marcelo, Takara, Amando Siuiti, Ito
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Enantioselective Synthesis of Atropisomers via Vinylidene ortho-Quinone Methides (VQMs).
Accounts of Chemical Research, 2022ConspectusAtropisomers, arising from conformational restriction, are inherently chiral due to the intersecting dissymmetric planes. Since there are numerous applications of enantiopure atropisomers in catalyst design, drug discovery, and material science,
Wenling Qin, Yidong Liu, Hailong Yan
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Ortho‐aminobenzoic acid‐labeled bradykinins in interaction with lipid vesicles: Fluorescence study
Biopolymers, 2002AbstractThe peptide hormone bradykinin (BK) (Arg1‐Pro2‐Pro3‐Gly4‐Phe5‐Ser6‐Pro7‐Phe8‐Arg9) and its shorter homolog BK1–5 (Arg1‐Pro2‐Pro3‐Gly4‐Phe5) were labeled with the extrinsic fluorescent probe ortho‐aminobenzoic acid (Abz) bound to the N‐terminal and amidated in the C‐terminal carboxyl group (Abz‐BK‐NH2 and Abz‐BK1–5‐NH2). The fragment des‐Arg9‐BK
Turchiello, R. F. +4 more
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Photochemistry and Photobiology, 1988
Abstract— The fluorescence properties of three ortho aminobenzoate local anesthetics have been determined in a variety of solvents. Results from these studies have been used to deduce how these drugs interact with phosphatidylcholine bilayers. The emission energy, fluorescence quantum yield and lifetime exhibited a biphasic dependence on solvent ...
W, Birmachu, J K, Reed
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Abstract— The fluorescence properties of three ortho aminobenzoate local anesthetics have been determined in a variety of solvents. Results from these studies have been used to deduce how these drugs interact with phosphatidylcholine bilayers. The emission energy, fluorescence quantum yield and lifetime exhibited a biphasic dependence on solvent ...
W, Birmachu, J K, Reed
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Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2015
TD-DFT and a combination of polarized continuum model (PCM) and microhydration methods helped to simulate the optical electronic absorption spectrum of ortho-aminobenzoic acid (o-Abz). The microhydration method involved the use of different numbers, from 1 to 5, of first solvation layer water molecules.
Danilo da Silva, Olivier +2 more
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TD-DFT and a combination of polarized continuum model (PCM) and microhydration methods helped to simulate the optical electronic absorption spectrum of ortho-aminobenzoic acid (o-Abz). The microhydration method involved the use of different numbers, from 1 to 5, of first solvation layer water molecules.
Danilo da Silva, Olivier +2 more
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Structural aspects of the effect of ethyl aminobenzoates on caffeine contracture.
Journal of Pharmacology and Experimental Therapeutics, 1974The effect of the three isomeric ethyl aminobenzoates on the caffeine-induced contracture of frog sartorius muscle was investigated. The meta - and para -isomers of the ester depressed both the initial phase and the peak tension of the contracture ...
H. A. Friedman, C. Bianchi, S. J. Weiss
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Self-condensation of ortho-aminobenzoic acid in the presence of metal ions
Polyhedron, 1996Abstract The self-condensation reaction of o-aminobenzoic acid in the presence of metal ions resulted in the preparation of a novel series of tetraazamacrocyclic complexes bearing amide groups. These complexes were characterized by elemental analysis, IR, 1H NMR, EPR and electronic spectral studies, conductivity and magnetic susceptibility ...
Mohammad Shakir +3 more
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