EP 0000042 B1 19800820 - PROCESS FOR THE PREPARATION OF 2,4,5-TRICHLOROPYRIMIDINE
Title (en)
PROCESS FOR THE PREPARATION OF 2,4,5-TRICHLOROPYRIMIDINE
Publication
Application
Priority
DE 2725888 A 19770608
Abstract (en)
[origin: US4171442A] Process for the preparation of 2,4,5-trichloropyrimidine, characterized in that compounds of the formula <IMAGE> wherein R a radical which can be split off under the reaction conditions and R' an optionally substituted lower alkyl radical, ARE REACTED AT TEMPERATURES FROM 0 DEG TO 50 DEG C. with less than 7.5 mols of chlorine, in particular 3.5 to 7.0 mols of chlorine, and the reaction products are then after-heated to temperatures of 100 DEG -150 DEG C., in particular 110 DEG -140 DEG C., in the absence of chlorine.
IPC 1-7
IPC 8 full level
C07D 239/30 (2006.01)
CPC (source: EP US)
C07D 239/30 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB
DOCDB simple family (publication)
EP 0000042 A1 19781220; EP 0000042 B1 19800820; DE 2725888 A1 19781221; DE 2860223 D1 19801204; JP S543079 A 19790111; US 4171442 A 19791016
DOCDB simple family (application)
EP 78100071 A 19780601; DE 2725888 A 19770608; DE 2860223 T 19780601; JP 6734978 A 19780606; US 91311978 A 19780606