EP 0000535 B1 19820519 - PROCESS FOR THE PREPARATION OF VINYL OXIRANES SUBSTITUTED BY HALOGEN
Title (en)
PROCESS FOR THE PREPARATION OF VINYL OXIRANES SUBSTITUTED BY HALOGEN
Publication
Application
Priority
DE 2734243 A 19770729
Abstract (en)
[origin: EP0000535A1] 1. Process for the preparation of vinyloxiranes which are halogen-substituted on the oxirane ring and/or on the vinyl group from halogen-substituted polyenes and percarboxylic acids in organic solution, characterised in that a halogen-substituted polyene of the formula see diagramm : EP0000535,P9,F3 wherein R**1 and R**6 independently of one another denote hydrogen, C1 - to C4 -alkyl, vinyl or phenyl and R2 , R3 , R4 and R5 independently of one another represent hydrogen, C1 - to C4 -alkyl, vinyl, C3 - to C7 -cycloalkyl, phenyl, fluorine, chlorine or bromine, at least one of the radicals R2 to R5 denoting fluorine, chlorine or bromine, and wherein R1 and R2 , or R1 and R3 , or R1 and R4 , or R1 and R5 , or R3 and R4 can form a carbocyclic ring, is reacted with a solution of a percarboxylic acid in an organic solvent at a molar ratio of halogen-substituted polyene to percarboxylic acid of 1.0:1.0 to 10 or 1.0 to 10:1.0 and at a temperature of -20 degrees C to +100 degrees C, the percarboxylic acid containing up to 5% by weight of water and up to 2% by weight of hydrogen peroxide and the percarboxylic acid solution containing less than 50 ppm of mineral acid.
IPC 1-7
IPC 8 full level
C07D 301/14 (2006.01); C07D 303/08 (2006.01); C07D 303/48 (2006.01)
CPC (source: EP)
C07D 303/08 (2013.01); C07D 303/48 (2013.01)
Designated contracting state (EPC)
BE CH DE FR GB NL
DOCDB simple family (publication)
EP 0000535 A1 19790207; EP 0000535 B1 19820519; DE 2734243 A1 19790208; DE 2861847 D1 19820708; JP S5427515 A 19790301
DOCDB simple family (application)
EP 78100421 A 19780718; DE 2734243 A 19770729; DE 2861847 T 19780718; JP 9209078 A 19780729