Patent ID: 8987477
Filing Date: 2015-03-24
Classification: C07D,G02B

Abstract:
1. Photochromic double-indeno-fused naphthopyrans having the general formula (I): where the residues R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently a substituent selected from the group α, consisting of a hydrogen atom, a (C 1 -C 6 )-alkyl residue, a (C 1 -C 6 )-thioalkyl residue, a (C 3 -C 7 )-cycloalkyl residue, which may have one or more heteroatoms, a (C 1 -C 6 )-alkoxy residue, a hydroxyl group, a trifluoromethyl group, bromine, chlorine, fluorine, an unsubstituted, monosubstituted or disubstituted phenyl, phenoxy, benzyl, benzyloxy, naphthyl or naphthoxy residue, in which the substituents may in turn be selected from the group α, preferably from (C 1 -C 6 )-alkyl, (C 1 C 6 )-akloxy, bromine, chlorine or fluorine; m and n are each independently an integer from 1 to 4, or the residues R or the residues R or two adjacent residues R or two adjacent residues R and B and B′ are each independently selected from one of the following groups a) or b), where where the substituents of the aryl or heteroaryl residues in a) and b) are those selected from the previously defined group α or the group χ, consisting of amino, mono-(C or where two directly adjacent substituents of the aryl or heteroaryl residues in a) and b) are a V—(CR