| 摘要 |
A spiro(indolino) oxazine compound of general formula (I), wherein R1 represents a group of the formula -NR2R3, wherein each of R2 and R3, which may be the same or different, independently represents an alkyl group, or a carbocyclic group, preferably aryl, or a heterocyclic group, or R2 and R3 taken together with the nitrogen atom to which they are attached represent a heterocyclic ring having one or more heteroatoms and which may optionally carry at least one substituent selected from alkyl, aryl or heteroaryl groups; R4 represents an alkyl group which may be linear, branched or alicyclic; each of R5 and R6, which may be the same or different, represents an alkyl group or a carbocyclic or heterocyclic group, or R5 and R6 taken together with the carbon atom to which they are attached represent a carbocyclic or heterocyclic ring which may optionally carry at least one substituent selected from alkyl, aryl or heteroaryl groups; R7 represents a hydrogen atom or an alkyl, aryl or heteroaryl group, or a carbocyclic or heterocyclic group which is fused to heterocyclic ring B; R8 represents a hydrogen atom or a substituent selected from alkyl, alkoxy, aryl, aryloxy, heteroaryl, halogen, azo, imino, amide, ester, cyano, trifluoromethyl or nitro group, or a dialkylamino group; -X- is selected from -O-, -S-, -Se-, -NH- or -NR- wherein R represents an alkyl group, and ring A is a carbocyclic or heterocyclic ring which can be optionally substituted with a group of formula R8 as defined above, or may optionally have a carbocyclic or heterocyclic ring fused thereto. The spiro(indolino) oxazine compounds of the invention are useful as photochromic materials in lenses, e.g., sunglasses, and photochromic transparencies for cars and aricrafts. |
