[EN] PROCESS OF PREPARATION OF AZIMSULFURON<br/>[FR] PROCÉDÉ DE PRÉPARATION D'AZIMSULFURON
申请人:RALLIS INDIA LTD
公开号:WO2014002111A1
公开(公告)日:2014-01-03
The present disclosure provides process for preparation of azimsulfuron or its salts, isomers, and other derivatives thereof. The process involves treating a compound of formula I, (Formula I should be inserted here.) with aqueous acetic acid or formic acid and chlorine gas or sodium hypochlorite in presence of hydrochloric acid in chlorinated solvents such as dichloromethane, 1,2-dichloroethane or with aqueous acetic acid and N-chlorosuccinimide or hydrogen peroxide in presence of hydrochloric acid in aqueous cyclic ether such as tetrahydrofuran, 1,4-dioxane to obtain 1-methyl-4-(2-methyl-2H-tetrazol-5-yl)-1H-pyrazole-5-sulfonyl chloride; converting the sulfonyl chloride to a sulfonamide and treating the sulfonamide with a phenyl(4,6-dimethoxypyrimidin-2-yl) carbamate to obtain azimsulfuron or its salts, isomers, and other derivatives thereof.
The present disclosure provides process for preparation of azimsulfuron or its salts, isomers, and other derivatives thereof. The process involves treating a compound of formula I,
with aqueous acetic acid or formic acid and chlorine gas or sodium hypochlorite in presence of hydrochloric acid in chlorinated solvents such as dichloromethane, 1,2-dichloroethane or with aqueous acetic acid and N-chlorosuccinimide or hydrogen peroxide in presence of hydrochloric acid in aqueous cyclic ether such as tetrahydrofuran, 1,4-dioxane to obtain 1-methyl-4-(2-methyl-2H-tetrazol-5-yl)-1H-pyrazole-5-sulfonyl chloride; converting the sulfonyl chloride to a sulfonamide and treating the sulfonamide with a phenyl(4,6-dimethoxypyrimidin-2-yl) carbamate to obtain azimsulfuron or its salts, isomers, and other derivatives thereof.
Synthesis and antiproliferative properties of isoxazole analogs containing dibenzosuberane moiety
作者:Manjunath Moger、Ashok Pradhan、Apoorva Singh、Darshan Raj Chenna Govindaraju、Rama Mohan Hindupur、Hari N. Pati
DOI:10.1007/s00044-015-1497-3
日期:2016.3
AbstractA series of twelve novel isoxazole analogscontaining dibenzosuberane moiety were synthesized using convergent synthesis approach. Newly synthesized compounds were well characterized by mass spectroscopy, IR and NMR spectroscopy. All the compounds were screened for their antiproliferative property against HepG2 and HeLa cell lines. Among them, compounds 7a, 7b, 7c, 7g and 7h were found active
[EN] SUBSTITUTUED PYRAZOLE COMPOUNDS AND PROCESS FOR PREPARATION THEREOF.<br/>[FR] COMPOSÉS DE PYRAZOLE SUBSTITUÉS ET LEUR PROCÉDÉ DE PRÉPARATION
申请人:RALLIS INDIA LTD
公开号:WO2014002110A1
公开(公告)日:2014-01-03
The present disclosure provides a compound of formula I, its derivatives, salts, stereo-isomers, or regio-isomers thereof, useful as intermediates in preparation of sulfonamide or sulfonyl urea growth regulators or herbicides. Formula I The present disclosure further provides a process for preparing compound of formula I, its derivatives, salts, stereo-isomers, or regio-isomers thereof.
Synthesis, structure, and properties of pyrazole-4-carbaldehyde oximes
作者:O. S. Attaryan、A. A. Sahakyan、R. A. Tamazyan、A. G. Ayvazyan、G. V. Asratyan
DOI:10.1134/s1070363212100131
日期:2012.10
1-Alkyl-1H-pyrazole-4-carbaldehyde oximes reacted with acetic anhydride to give the corresponding nitriles, which is typical for anti isomers of aldoximes. The anti configuration of 5-methyl-1-propyl-1H-pyrazole-4-carbaldehyde oxime in crystal was unambiguously determined by X-ray analysis.