Synthesis of photochromic spirooxazines from 1-amino-2-naphthols
摘要:
A synthetic access to photochromic spirooxazines is developed through the condensation of methylene-substituted azaheterocycles on 1-amino-2-naphthols in presence of an oxidizing agent. Compared to usual preparation of this kind of compounds (via 1-nitroso-2-naphthols), yields are generally good and approaches to Further spiroheterocyclic oxazines are possible. (C) 1997 Elsevier Science Ltd.
[EN] SPIRO[INDOLINE-[2,3']-BENZOXAZINE]-TYPE PHOTOCHROMIC COMPOUNDS CONTAINING A 6'-CYANO OR PHENYLSULPHONYL GROUP AND WITH A 7', 8'-CONDENSED BENZENE RING IN THE BENZOXAZINE RING AND USE OF SAME IN OPHTHALMIC OPTICS<br/>[FR] COMPOSES PHOTOCHROMIQUES DE STRUCTURE SPIRO[INDOLINE-[2,3']-BENZOXAZINE] A GROUPEMENT CYANO OU PHENYLSULFONYL EN 6' ET COMPORTANT UN CYCLE BENZENIQUE CONDENSE EN 7', 8' DU NOYAU BENZOXAZINE, ET LEUR UTILISATION DANS LE DOMAINE DE L'OPTIQUE OPHTALMIQUE
申请人:ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE
公开号:WO1996004590A1
公开(公告)日:1996-02-15
(EN) 6'-cyano or phenylsulphonyl-substitued spiro[indoline-[2,3']-benzoxazine]-type photochromic compounds, wherein said cyano or phenylsulphonyl group is bound to the 6' carbon atom by the sulphur atom, and having a 7', 8'-condensed benzene ring, and use of same in ophthalmic optics.(FR) L'invention est relative à des composés photochromiques de structure spiro[indoline-[2,3']-benzoxazine] substitués en position 6' par un groupement cyano ou phénylsulfonyl lié par l'atome de soufre au carbone en 6' et comportant un cycle benzénique condensé en 7', 8' et leur utilisation dans l'optique ophtalmique.
COMPOSES PHOTOCHROMIQUES DE STRUCTURE SPIRO INDOLINE- 2,3']-BENZOXAZINE] A GROUPEMENT CYANO OU PHENYLSULFONYL EN 6' ET COMPORTANT UN CYCLE BENZENIQUE CONDENSE EN 7', 8' DU NOYAU BENZOXAZINE, ET LEUR UTILISATION DANS LE DOMAINE DE L'OPTIQUE OPHTALMIQUE
申请人:ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
公开号:EP0772798A1
公开(公告)日:1997-05-14
US5936016A
申请人:——
公开号:US5936016A
公开(公告)日:1999-08-10
521. Reaction of arenesulphinic acids with azo-compounds and nitrosonaphthols
作者:William Bradley、John D. Hannon
DOI:10.1039/jr9620002713
日期:——
Synthesis of photochromic spirooxazines from 1-amino-2-naphthols
A synthetic access to photochromic spirooxazines is developed through the condensation of methylene-substituted azaheterocycles on 1-amino-2-naphthols in presence of an oxidizing agent. Compared to usual preparation of this kind of compounds (via 1-nitroso-2-naphthols), yields are generally good and approaches to Further spiroheterocyclic oxazines are possible. (C) 1997 Elsevier Science Ltd.