EP 0000879 B1 19800820 - PROCESS FOR THE PREPARATION OF AROMATIC CARBONIC ACID ESTERS
Title (en)
PROCESS FOR THE PREPARATION OF AROMATIC CARBONIC ACID ESTERS
Publication
Application
Priority
DE 2736062 A 19770810
Abstract (en)
[origin: EP0000879A1] 1. A process for the production of aromatic carbonic acid esters by transesterifying dialkyl carbonates with phenols under the elimination of alcohols and in the presence of transesterification catalysts, wherein organo tin compounds of the general formula I (R**1 )-Sn-(Y)x 4-x in which Y represents an see diagramm : EP0000879,P5,F2 OH or OR**2 radical, R**2 denoting a C1 -C12 alkyl radical, a C6 -C12 aryl radical or a C7 -C13 alkylaryl radical, and R**1 has the meaning of R**2 and x denotes an integer from 1 to 3, or dialkyl tin oxides each with 1-12 C-Atoms in the alkyl radical or organo tin compounds of the general formula II see diagramm : EP0000879,P5,F4 in which R**1 and R**4 are the same or different and have the above-indicated meaning of R**2 , and R**5 has the meaning of R**2 or represents a radical OR**6 in which R**6 has the meaning of R**2 are used as reesterification catalysts, in quantities of from 0.001 to 20% by weight, based on the total amount of the reaction mixture.
IPC 1-7
IPC 8 full level
B01J 31/00 (2006.01); B01J 31/02 (2006.01); B01J 31/12 (2006.01); C07B 61/00 (2006.01); C07C 69/96 (2006.01); C07C 67/03 (2006.01); C07C 68/06 (2006.01)
IPC 8 main group level
C07C (2006.01)
CPC (source: EP)
C07C 68/06 (2013.01)
C-Set (source: EP)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0000879 A1 19790307; EP 0000879 B1 19800820; DE 2736062 A1 19790222; DE 2860235 D1 19801204; IT 1106869 B 19851118; IT 7850656 A0 19780808; JP S5448733 A 19790417
DOCDB simple family (application)
EP 78100570 A 19780802; DE 2736062 A 19770810; DE 2860235 T 19780802; IT 5065678 A 19780808; JP 9628078 A 19780809