EP 1071685 A1 20010131 - TITANIUM CATALYZED PREPARATION OF CARBAPENEM INTERMEDIATES
Title (en)
TITANIUM CATALYZED PREPARATION OF CARBAPENEM INTERMEDIATES
Title (de)
TITAN-KATALYSIERTE HERSTELLUNG VON CARBAPENEM-ZWISCHENPRODUKTEN
Title (fr)
PREPARATION DE PRODUITS INTERMEDIAIRES DES CARBAPENEMS CATALYSEE AU TITANE
Publication
Application
Priority
- GB 9811297 A 19980526
- US 9907956 W 19990412
- US 8200398 P 19980416
- US 9142298 P 19980701
Abstract (en)
[origin: WO9952908A1] An efficient method for the synthesis of a compound of formula (2) is disclosed which comprises reacting a 4-acyl-2-azetidinone with a titanium, zirconium or hafnium enolate of a 1-hydroxy-2-butanone derivative.
IPC 1-7
IPC 8 full level
C07D 205/08 (2006.01); C07D 477/00 (2006.01); C07D 477/04 (2006.01)
CPC (source: EP)
C07D 205/08 (2013.01); C07D 477/04 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
WO 9952908 A1 19991021; AU 3490899 A 19991101; AU 745980 B2 20020411; CA 2328219 A1 19991021; EP 1071685 A1 20010131; EP 1071685 A4 20010718; JP 2002511470 A 20020416
DOCDB simple family (application)
US 9907956 W 19990412; AU 3490899 A 19990412; CA 2328219 A 19990412; EP 99916629 A 19990412; JP 2000543465 A 19990412