发明名称 |
VERFAHREN ZUR HERSTELLUNG VON 2,3,5,6-TETRACHLORPYRIDIN UND 2,3,6-TRICHLORPYRIDIN. |
摘要 |
Vapor phase chlorination of 2,6-dichloropyridine produces 2,3,6-trichloropyridine selectively over isomeric 2,4,6-trichloropyridine and of 2,3,6-trichloropyridine produces 2,3,5,6-tetrachloropyridine in high selectivity over isomeric 2,3,4,6-tetrachloroyridine at temperatures of 300 DEG C to 450 DEG C. The products are intermediates for insecticides and herbicides. |
申请公布号 |
DE3853209(D1) |
申请公布日期 |
1995.04.06 |
申请号 |
DE19883853209 |
申请日期 |
1988.05.12 |
申请人 |
DOWELANCO, INDIANAPOLIS, IND., US |
发明人 |
DESJARDIN, MICHAEL, A., SAN RAMON, CA 94583, US;KINDORF, TODD, E., OAKLAND, CA 94611, US |
分类号 |
C07D213/61 |
主分类号 |
C07D213/61 |
代理机构 |
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代理人 |
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地址 |
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