Studies on N-nitroso derivatives of N-methylcarbamate insecticides. II. Kinetical studies on the N-nitrosocarbamate formation from 3-methylphenyl N-methylcarbamate or 3,4-dimethylphenyl N-methylcarbamate and sodium nitrite.
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چکیده
منابع مشابه
Theoretical studies on corrosion inhibition of N-aroyl-N’-aryl thiourea derivatives using conceptual DFT approach
In this paper, quantum chemical parameters at density functional theory (DFT) B3LYP/6-31G** (d,p) level of theory were calculated for three organic corrosion inhibitors [N-benzoyl-N-(p-aminophenyl) thiourea, N-benzoyl-N-(thiazole) thiourea and N-acetyl-N-(dibenzyl) thiourea. The calculated molecular descriptors such as the HOMO, LUMO, dipole moment, chemical potential (μ), chemical hardness (ղ)...
متن کاملSynthesis, Characterization and Antibacterial Activity Studies of Some N-Acyl-N'-aryl Thiourea Derivatives
Some N¬-acyl-N'-aryl thiourea derivatives 4(a-f) have been prepared by the reaction of acyl halides ammonium thiocyanate and aryl amines. The structures of synthesized compounds have been characterized by IR, 1HNMR spectral studies. The synthesized compounds 5(a-f) have been screened for antibacterial activity. The effect of the structure of the investigated compounds on the antibacterial activ...
متن کاملPurification and characterization of the N-methylcarbamate hydrolase from Pseudomonas strain CRL-OK.
A unique cytosolic enzyme that hydrolyzes the carbamate linkage of the insecticide carbaryl (1-naphthyl N-methylcarbamate) was purified from extracts of Pseudomonas sp. strain CRL-OK. Substrates of the hydrolase include the N-methylcarbamate pesticides carbofuran and aldicarb but not the phenylcarbamate isopropyl m-chlorocarbanilate, the thiocarbamate S-ethyl N,N-dipropylthiocarbamate, or the d...
متن کامل[Simultaneous determination of N-methylcarbamate pesticides and their metabolites in agricultural products].
We investigated the determination of N-methylcarbamate pesticides and their metabolites in agricultural products by HPLC with post-column fluorescence detection after clean-up with an SPE cartridge. The homogenate of agricultural products was extracted with acetone. The crude extract was partitioned between 5% sodium chloride solution and dichloromethane, and the dichloromethane layer was conce...
متن کاملThe metabolism of 3,5-di-tert.-butylphenyl N-methylcarbamate in insects and by mouse liver enzymes.
The oxidation of 3,5-di-tert.-butylphenyl N-methylcarbamate (Butacarb) has been studied in the flies Musca domestica and Lucilia sericata, grass grubs Costelytra zealandica and the mouse. In all species eleven oxidation products, which were formed by hydroxylation of the tert.-butyl groups and the N-methyl group, were detected.
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ژورنال
عنوان ژورنال: Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi)
سال: 1977
ISSN: 0015-6426,1882-1006
DOI: 10.3358/shokueishi.18.170