(19)
(11) EP 4 816 350 A1

(12)

(43) Date of publication:
07.10.2026 Bulletin 2026/41

(21) Application number: 24896919.8

(22) Date of filing: 28.11.2024
(51) International Patent Classification (IPC): 
C07C 237/20(2006.01)
C07C 59/56(2006.01)
 C07C 237/14(2006.01)
(52) Cooperative Patent Classification (CPC):
C07C 201/12; C07C 213/02; C07C 231/02; C07C 231/12
 
C-Sets:
  1. C07C 201/12, C07C 205/32;
  2. C07C 213/02, C07C 217/60;
  3. C07C 231/02, C07C 235/34;
  4. C07C 231/12, C07C 235/34;
(86) International application number:
PCT/IN2024/052299
(87) International publication number:
WO 2025/115036 (05.06.2025 Gazette 2025/23)
(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: 29.11.2023 IN 202311081168

(71) Applicant: Council of Scientific & Industrial Research
New Delhi 110001 (IN)

(72) Inventors:
  • DEB, Indubhusan
    West Bengal Kolkata 700032 (IN)
  • MONDAL, Imtiaj
    West Bengal Kolkata 700032 (IN)
  • NASKAR, Koushik
    West Bengal Kolkata 700032 (IN)
  • ROY, Shantonu
    West Bengal Kolkata 700032 (IN)

(74) Representative: AWA Sweden AB 
Box 5117
200 71 Malmö
200 71 Malmö (SE)

   


(54) A PROCESS FOR THE SYNTHESIS OF 2-(4-CHLOROPHENYL)-2-HYDROXY-N-(3-METHOXY-4-(PROP-2- YN-1-YLOXY)PHENETHYL)ACETAMIDE, A KEY INTERMEDIATE OF MANDIPROPAMID