Indoline and 1,2,3,4-tetrahydroquinoline N(dicarboalkoxyvinyl) substituted derivatives

摘要

An indoline derivative of the formula (I) <IMAGE> (I) in which R1 denotes H or C1-C8-alkyl; R2 and R3 are identical or different and denote C1-C8-alkyl; R4-R9 are identical or different and denote H, C1-C8-alkyl, C5-C6-cycloalkyl or phenyl-C1-C4-alkyl, or R5 and R6 connected together to form a further C5-C6 ring, and R10 denotes H or one or more radicals selected from the group consisting of C1-C8-alkyl, C1-C8 alkoxy, C5-C6-cycloalkyl, phenyl-C1-C4-alkyl and carb-C1-C8-alkoxy radicals, or halogen atoms. Such indoline derivative is useful as a UV absorber.