EP 0000555 B1 19820210 - PROCESS FOR THE PREPARATION OF OXIRANES SUBSTITUTED BY HALOGEN ALKYL
Title (en)
PROCESS FOR THE PREPARATION OF OXIRANES SUBSTITUTED BY HALOGEN ALKYL
Publication
Application
Priority
DE 2734086 A 19770728
Abstract (en)
[origin: EP0000555A1] 1. Process for the preparation of halogenalkyl-substituted oxiranes from chloroalkyl-substituted or bromoalkyl-substituted monoolefins of the general formula see diagramm : EP0000555,P9,F1 wherein R1 and R4 independently of one another denote hydrogen, C1 - to C5 -alkyl, C5 - to C7 -cycloalkyl, monochloro-C1 - to C5 -alkyl, monobromo-C1 - to C5 -alkyl, dichloro-C1 - to C5 -alkyl, dibromo-C1 - to C5 -alkyl, monochloro-C5 - to C7 -cycloalkyl, monobromo-C5 - to C7 -cycloalkyl, dichloro-C5 - to C7 -cycloalkyl or dibromo-C5 - to C7 -cycloalkyl and R2 and R3 independently of one another represent hydrogen, C1 - to C5 -alkyl, monochloro-C1 - to C5 -alkyl, monobromo-C1 - to C5 -alkyl, dichloro-C1 - to C5 -alkyl and dibromo-C1 - to C5 -alkyl, it being possible for the radicals R2 and R3 , together with the carbon atoms of the C=C double bond, to form a ring with up to 12 carbon atoms, and at least one of the radicals R1 to R4 being an alkyl or cycloalkyl radical of the type mentioned containing chlorine or bromine, and percarboxylic acids at an elevated temperature and in the presence of solvents, characterised in that the reaction is carried out with a solution of a percarboxylic acid containing 3 to 4 carbon atoms in benzene, at a molar ratio of monoolefin to percarboxylic acid of 1.1 : 1 to 10 : 1 and at a temperature of 60 degrees C to 80 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 used for the reaction having a mineral acid content of below 50 ppm.
IPC 1-7
IPC 8 full level
C07D 303/08 (2006.01); C07D 301/14 (2006.01)
CPC (source: EP)
C07D 301/14 (2013.01); C07D 303/08 (2013.01)
Designated contracting state (EPC)
BE CH DE FR GB NL
DOCDB simple family (publication)
EP 0000555 A1 19790207; EP 0000555 B1 19820210; AT 358058 B 19800825; AT A544678 A 19800115; CA 1120048 A 19820316; DD 138066 A5 19791010; DE 2734086 A1 19790222; DE 2861620 D1 19820318; JP S5427514 A 19790301; JP S6236030 B2 19870805
DOCDB simple family (application)
EP 78100457 A 19780720; AT 544678 A 19780726; CA 308194 A 19780726; DD 20695678 A 19780726; DE 2734086 A 19770728; DE 2861620 T 19780720; JP 9056878 A 19780726