EP 1071685 A4 20010718 - 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)
Citation (search report)
- [XA] EP 0573667 A1 19931215 - NIPPON SODA CO [JP]
- [XA] EP 0330108 A1 19890830 - FUJISAWA PHARMACEUTICAL CO [JP]
- [XA] EP 0476649 A2 19920325 - HOECHST AG [DE]
- See references of WO 9952908A1
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