(19)
(11) EP 4 771 029 A1

(12)

(43) Date of publication:
08.07.2026 Bulletin 2026/28

(21) Application number: 24762684.9

(22) Date of filing: 30.08.2024
(51) International Patent Classification (IPC): 
C07J 1/00(2006.01)
C07J 31/00(2006.01)
 C07J 17/00(2006.01)
C07J 51/00(2006.01)
(52) Cooperative Patent Classification (CPC):
C07J 31/003; C07J 51/00; C07J 1/0059; C07J 1/007; C07J 17/00
(86) International application number:
PCT/EP2024/074283
(87) International publication number:
WO 2025/046071 (06.03.2025 Gazette 2025/10)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 30.08.2023 EP 23194371

(71) Applicant: Estetra SRL
4000 Liège (BE)

(72) Inventors:
  • DUBART, Amaury
    4000 Liége (BE)
  • CORNUT, Damien
    4000 Liége (BE)
  • DUHIRWE, Gilbert
    4000 Liége (BE)

(74) Representative: De Clercq & Partners 
Edgard Gevaertdreef 10a
9830 Sint-Martens-Latem
9830 Sint-Martens-Latem (BE)

   


(54) PROCESS FOR THE PRODUCTION OF ESTETROL INTERMEDIATES