(19)
(11) EP 4 323 333 A1

(12)

(43) Date of publication:
21.02.2024 Bulletin 2024/08

(21) Application number: 22720626.5

(22) Date of filing: 04.04.2022
(51) International Patent Classification (IPC): 
C07C 253/30(2006.01)
C07D 263/48(2006.01)
 C07C 255/30(2006.01)
(52) Cooperative Patent Classification (CPC):
C07C 253/30; C07C 255/30; C07D 263/48
 
C-Sets:
C07C 253/30, C07C 255/30;
(86) International application number:
PCT/EP2022/058839
(87) International publication number:
WO 2022/218734 (20.10.2022 Gazette 2022/42)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 15.04.2021 WO PCT/CN2021/087509

(71) Applicant: DSM IP Assets B.V.
6411 TE Heerlen (NL)

(72) Inventors:
  • BONRATH, Werner
    4303 Kaiseraugst (CH)
  • DAI, Le
    4303 Kaiseraugst (CH)
  • DAI, Xixiang
    4303 Kaiseraugst (CH)
  • GU, Qi
    4303 Kaiseraugst (CH)
  • LIU, Qiangqiang
    4303 Kaiseraugst (CH)
  • MARTY, Maurus
    4303 Kaiseraugst (CH)
  • MUELLER, Marc-André
    4303 Kaiseraugst (CH)
  • PENG, Kun
    4303 Kaiseraugst (CH)
  • WU, Liuhai
    4303 Kaiseraugst (CH)
  • ZHANG, Zili
    4303 Kaiseraugst (CH)
  • ZIEGLER, Florian
    4303 Kaiseraugst (CH)

(74) Representative: dsm-firmenich IP 
DSM-Firmenich AG Wurmisweg 576
4303 Kaiseraugst
4303 Kaiseraugst (CH)

   


(54) A PROCESS FOR PREPARATION OF SUBSTITUTED ENAMINE COMPOUNDS