official journal of the patent office - Controller General of Patents ...

(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) Application No.: 1166/MUM/2004 A
(22) Date of filing of Application: 01/11/2004 (43) Publication Date: 09/06/2006
(54) Title of the invention: A PROCESS FOR PREPARATION OF 5- ACETOACETYLAMINO-2-
BENZIMIDAZOLONE USING ACETOACETIC ESTERS.
(51) International classification : C07D 235/26,
C07D 235/00
(31) Priority Document No : NIL
(32) Priority Date : NIL
(33) Name of priority country : NIL
(86) International Application No : NIL
and Filing Date : NIL
(87) International Publication No : NIL
(61) Patent of addition to :
Application No
NIL
(62)
Filed on : N.A.
Divisional to Application No : NIL
Filed on : N.A.
(57) Abstract:
(71) Name of Applicant:
GHARDA CHEMICALS LTD.
Address of the Applicant:
MIDC, B-27/29, PHASE I, DOMBIVLI
(E), 421203, DIST.THANE,
MAHARASHTRA, INDIA.
(72) Name of the Inventor:
1. DAKORWALA TAHER
SAFAKATHUSAIN
2. NABAR UDAY VISHWANATH
3. NAIR PRIYA MURLI
Filed U/S 5(2) before The Patents
(Amendment) Act, 2005: NO
5-acetoacetylamino-2-benzimidazolone is prepared by suspending the 5-amino-benzimidazole in an organic
solvent such as monochlorobenzene, xylene, toluene, dimethylsulfoxide, dichlorobenzene etc. and reacting it with
aceto acetic ester viz. methyl, ethyl, butyl, isopropyl at reflux temperature of solvent ranging from 100 to 165ºC
Drawing Sheets: NIL
Total Pages: 10.
Fig. Nil
The Patent Office Journal 09/06/2006 10860