发明名称 |
PROCESS OF PREPARATION OF AZIMSULFURON |
摘要 |
<p>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.</p> |
申请公布号 |
WO2014002111(A1) |
申请公布日期 |
2014.01.03 |
申请号 |
WO2013IN00252 |
申请日期 |
2013.04.12 |
申请人 |
RALLIS INDIA LIMITED |
发明人 |
PALIMKAR, SANJAY SAMBHAJIRAO;PAWAR, JIVAN DHANRAJ;SANKAR, B;KADAM, SUBHASH RAJARAM;HINDUPUR, RAMA MOHAN;PRABHU, VENKATESH M.;PATI, HARI NARAYAN;SUPHALA, VADIRAJ GOPINATH;MANE, AVINASH SHESHRAO |
分类号 |
C07D403/04 |
主分类号 |
C07D403/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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