Patent ID: 8933220
Filing Date: 2015-01-13
Classification: C07D,G02B

Abstract:
1. Photochromic naphthopyrans according to formula (I) or (II) below: wherein the radicals R two radicals R Z is selected from —CR or Z, incorporating the spiro-carbon atom, is a 3- to 8-membered carbomonocyclic or heteromonocyclic ring which may optionally bear one or more substituents from the group α, and to which one to three aromatic or heteroaromatic ring systems may be fused, wherein the ring system(s) are independently selected from the group β consisting of benzene, naphthalene, phenanthrene, pyridine, quinoline, furan, thiophene, pyrrole, benzofuran, benzothiophene, indole and carbazole, which in turn may be substituted with one or more substituents selected from the group α; or Z, incorporating the spiro-carbon atom, is a 7- to 12-membered carbobicyclic ring or a 7- to 12-membered carbotricyclic ring, which in turn may have one, two, three or four substituents selected from the group α, and wherein B is selected from one of the following groups a) or b), wherein a) is a mono-, di- and trisubstituted aryl radical, wherein the aryl radical is phenyl, naphthyl or phenanthryl; b) is an un-, mono- and disubstituted heteroaryl radical, wherein the heteroaryl radical is pyridyl, furanyl, thienyl, benzofuranyl, benzothienyl, 1,2,3,4-tetrahydrocarbazolyl and julolidinyl; wherein the substituents of the aryl and heteroaryl radicals in a) and b) are those selected from the group α or the group χ consisting of hydroxy, amino, mono-(C or wherein two directly adjacent substituents of the aryl and heteroaryl radicals in a) and b) are a V—(CR and wherein the aryl radical or heteroaryl radical of the group B in the two positions ortho to the point of attachment to the pyran ring has no substituent other than hydrogen, and wherein C is a substituent of the following structure, wherein R wherein R R four adjacent radicals R where X is N or CR where Y is O, S, NR