Naphthopyrans annelated in c5-c6, their preparation and...

Details Naphthopyrans annelated in c5-c6, their preparation and... Naphthopyrans annelated in c5-c6, their preparation and...

Category

C - Chemistry, Metallurgy

Subcategory

07

Subsubcategory

D

IPC codes

C07D 311/92 (2006.01) C07D 311/78 (2006.01) C07D 311/94 (2006.01) C07D 405/04 (2006.01) C07D 405/14 (2006.01) C07D 407/04 (2006.01) C07D 407/14 (2006.01) C07D 409/04 (2006.01) C08F 2/44 (2006.01) C08G 65/02 (2006.01) C08K 5/00 (2006.01) C08K 5/15 (2006.01) C08K 5/1545 (2006.01) C08L 101/00 (2006.01) C09K 9/02 (2006.01) G02B 1/00 (2006.01) G02B 5/23 (2006.01) G02C 7/10 (2006.01)

Type

Patent

Patent number

CA 2342338

Description

The invention relates to novel compounds of the naphthopyran type which have an annelated carbocycle in position 5, 6. These compounds are of formula (I) in which A is an alicyclic ring which is optionally annelated with an aromatic ring and in which two adjacent R3 can together form at least one ring, for example a benzo group. These compounds (I) possess interesting photochromic properties. The invention also relates to the method of preparing these compounds (I), as well as their applications as photochromes: compositions and (co)polymer matrices comprising them.

L'invention concerne de nouveaux composés de type naphtopyrane renfermant un noyau carbocyclique accolé en position 5, 6, de formule (I), dans laquelle A est un noyau alicyclique éventuellement accolé à un noyau aromatique et deux R¿3? adjacents peuvent former au moins un groupe, par exemple un groupe benzo. Ces composés (I) possèdent des propriétés photochromiques intéressantes. L'invention concerne également un procédé permettant de préparer lesdits composés (I), ainsi que leurs applications comme photochromes et des compositions et matrices (co)polymères les contenant.

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