EP 0828708 A1 19980318 - PROCESS FOR PRODUCING 2-CYANO-3,3-DIARY ACRYLIC ACID ESTERS
Title (en)
PROCESS FOR PRODUCING 2-CYANO-3,3-DIARY ACRYLIC ACID ESTERS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON 2-CYAN-3,3-DIARYLACRYLSÄUREESTERN
Title (fr)
PROCEDE DE PREPARATION DE 2-CYAN-3,3-DIARYLACRYLATES
Publication
Application
Priority
- DE 19519894 A 19950531
- EP 9602238 W 19960524
Abstract (en)
[origin: DE19519894A1] A process for producing 2-cyano-3,3-diary acrylic acid esters of general formula (I) in which R<1> and R<2> are hydrogen, C1-C12 alkoxy groups or di-(C1-C4 alkyl) amino groups and R<3> is a C4-C18 alkyl group which may be interrupted by oxygen atoms in the ether function, by the reaction of benzophenonimine of general formula (II) with a cyanic acid ester of general formula (III), in which the reaction is conducted at 20 to 60 DEG C and the ammonia released is continuously removed from the reaction mixture with the aid of a stream of gas or by reducing the pressure to 900 to 100mbar.
IPC 1-7
IPC 8 full level
C07C 253/30 (2006.01); C07C 255/41 (2006.01)
CPC (source: EP KR US)
C07C 253/30 (2013.01 - EP KR US); C07C 255/41 (2013.01 - KR)
Citation (search report)
See references of WO 9638409A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19519894 A1 19961205; AU 6000096 A 19961218; BG 102059 A 19980930; BR 9608495 A 19990706; CA 2218813 A1 19961205; CN 1071312 C 20010919; CN 1185780 A 19980624; EP 0828708 A1 19980318; JP 3773534 B2 20060510; JP H11505858 A 19990525; KR 19990014781 A 19990225; MX 9708836 A 19980331; NO 975499 D0 19971128; NO 975499 L 19971128; NZ 309758 A 19990429; PL 323590 A1 19980414; TR 199701451 T1 19980321; TW 419453 B 20010121; US 5917080 A 19990629; WO 9638409 A1 19961205
DOCDB simple family (application)
DE 19519894 A 19950531; AU 6000096 A 19960524; BG 10205997 A 19971120; BR 9608495 A 19960524; CA 2218813 A 19960524; CN 96194236 A 19960524; EP 9602238 W 19960524; EP 96917418 A 19960524; JP 53616396 A 19960524; KR 19970708124 A 19971114; MX 9708836 A 19960524; NO 975499 A 19971128; NZ 30975896 A 19960524; PL 32359096 A 19960524; TR 9701451 T 19960524; TW 85106506 A 19960531; US 95266797 A 19971201