WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1996003368) METHOD FOR PREPARING PHOTOCHROMIC COMPOUNDS OF THE SPIRO[INDOLIN-[2,3']-BENZOXAZINE] RINGED TYPE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1996/003368    International Application No.:    PCT/FR1994/000918
Publication Date: 08.02.1996 International Filing Date: 22.07.1994
Chapter 2 Demand Filed:    19.02.1996    
IPC:
C07D 498/10 (2006.01)
Applicants: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) [FR/FR]; 147, rue de Paris, F-94227 Charenton Cédex (FR) (For All Designated States Except US).
PALTCHKOV, Victor A. [RU/RU]; (RU) (For US Only).
CHELEPIN, Nikolaï E. [RU/RU]; (RU) (For US Only).
MINKIN, Vladimir I. [RU/RU]; (RU) (For US Only).
TROFIMOVA, Nadezhda S. [RU/RU]; (RU) (For US Only).
ZOUBKOV, Oleg A. [RU/RU]; (RU) (For US Only)
Inventors: PALTCHKOV, Victor A.; (RU).
CHELEPIN, Nikolaï E.; (RU).
MINKIN, Vladimir I.; (RU).
TROFIMOVA, Nadezhda S.; (RU).
ZOUBKOV, Oleg A.; (RU)
Agent: BUREAU D.A. CASALONGA JOSSE; 8, avenue Percier, F-75008 Paris (FR)
Priority Data:
Title (EN) METHOD FOR PREPARING PHOTOCHROMIC COMPOUNDS OF THE SPIRO[INDOLIN-[2,3']-BENZOXAZINE] RINGED TYPE
(FR) PROCEDE DE PREPARATION DE COMPOSES PHOTOCHROMIQUES DU TYPE SPIRO[INDOLINE-[2,3']-BENZOXAZINE] ANNELE
Abstract: front page image
(EN)The present invention relates to a method for the preparation of photochromic compounds having the spiro[indolin-[2,3']-benzoxazine] ringed structure (formula III), comprising the reaction of a Fischer base of the alkylideneindolin type with a ringed orthoaminophenol in the presence of an oxydant such as dimethylsulfoxide, the selenium bioxide or the pyridinium chlorochromate.
(FR)La présente invention concerne un procédé de préparation de composés photochromiques répondant à la structure spiro[indoline-[2,3']-benzoxazine] annelé (formule III), comportant la réaction d'une base de Fischer du type alkylidèneindoline sur un orthoaminophénol annelé, en présence d'un agent oxydant tel que le diméthylsulfoxyde, le bioxyde de selenium ou le chlorochromate de pyridinium.
Designated States: AU, BB, BG, BR, BY, CA, CN, CZ, FI, GE, HU, JP, KG, KP, KR, KZ, LK, LT, LV, MD, MG, MN, MW, NO, NZ, PL, RO, RU, SD, SK, TJ, TT, UA, US, UZ, VN.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: French (FR)
Filing Language: French (FR)