EP 0000531 B1 19800723 - PROCESS FOR THE PREPARATION OF DIALKOXYPHOSPHONO ALKYL CARBAMATES
Title (en)
PROCESS FOR THE PREPARATION OF DIALKOXYPHOSPHONO ALKYL CARBAMATES
Publication
Application
Priority
DE 2734454 A 19770730
Abstract (en)
[origin: EP0000531A1] 1. Process for the preparation of dialkoxyphosphonoalkylcarbamates of the formula see diagramm : EP0000531,P5,F5 in which R1 and R2 are identical or different alkyl radicals having from 1 to 4 carbon atoms, R3 is hydrogen or the CH3 group, R4 is hydrogen, (C1-4 ) alkyl or the group see diagramm : EP0000531,P5,F7 in which A is (C2-4 ) alkylene, n is 1 or 2, by reacting dialkylphosphites of the formula see diagramm : EP0000531,P6,F1 in which R1 and R2 are defined as in the formula I, with alkenylcarbamates of the formula see diagramm : EP0000531,P6,F2 in which R3 and n are defined as in the formula I and R'4 is hydrogen, (C1-4 )alkyl or the group see diagramm : EP0000531,P6,F3 in which A, n and R3 are defined as in the formulae I and II, at elevated temperature and in the presence of peroxides as catalysts, which comprises using the dialkylphosphites III and the alkenylcarbamates IV, if R'4 is hydrogen or a (C1-4 )alkyl group, in a molar ratio of 1 : 1 or, if R'4 in the alkenylcarbamates IV is the group V, in a molar ratio of 2:1.
IPC 1-7
IPC 8 full level
C07F 9/40 (2006.01); D06M 13/44 (2006.01)
CPC (source: EP)
C07F 9/4006 (2013.01)
Designated contracting state (EPC)
BE CH DE FR GB NL
DOCDB simple family (publication)
EP 0000531 A1 19790207; EP 0000531 B1 19800723; DE 2734454 B1 19790104; DE 2734454 C2 19790913; DE 2860062 D1 19801113; IT 1097780 B 19850831; IT 7826271 A0 19780728
DOCDB simple family (application)
EP 78100416 A 19780718; DE 2734454 A 19770730; DE 2860062 T 19780718; IT 2627178 A 19780728