Process for the preparation of pure 2,5-dichloropyridine and the isolation of 2,3-dichloropyridine which is formed as a by-product.
摘要
The invention relates to a novel process for the preparation of 2,5-dichloropyridine as an isomer-free product from 2-chloropyridine or 2-bromopyridine. The novel process also includes the recovery and preparation in pure form of the by-products chlorinated in the 3-position.
申请公布号
EP0591624(A1)
申请公布日期
1994.04.13
申请号
EP19930110631
申请日期
1993.07.03
申请人
RUETGERSWERKE AKTIENGESELLSCHAFT
发明人
SENDELBACH, STEFAN, DR.;ORTH, WINFRIED, DR.;WEISS, WOLFGANG, DR.;KLEFFNER, HANS WERNER, DR.;LAEUFER, ALBRECHT, DR.