| 摘要 |
2-(1-Indanylidene)-3-oxo-alkanoic acid derivatives (I) (including esters, amides and nitriles) are new. Indanylidene compounds of formula (I) are new. R1 - R4 = H, 1-20C alkyl or 5-10C cycloalkyl; or 2-20C alkyl in which at least one CH2 is replaced by O, 3-20C alkenyl, 3-20C alkynyl or S'; or of R1 - R4 on adjacent C may together form optionally substituted 1-4C alkylene; S' = silane, oligosilane or polysiloxane group; R5 - R8 = H, 1-20C alkyl, 5-10C cycloalkyl, 1-20C alkoxy, 5-10C cycloalkoxy, OH, acetoxy, acetamino, COOH, alkoxycarbonyl or carbamoyl; or 2-20C alkyl in which at least one CH2 is replaced by O, 3-20C alkenyl, 3-20C alkynyl or S'; or two of R5 - R8 on adjacent C may together form a 5-7 membered ring containing up to 3 heteroatoms (specifically O or N) and optionally substituted by exocyclic =O (keto); X = CN, CON(R)2 or COOR; R = H or 1-4C alkyl; n = 0 or 1. If n is1 then R9 - R11 = H, 1-20C alkyl, 5-10C cycloalkyl, aryl or heteroaryl; or two of R9 - R11 together form a 3-7 membered ring optionally containing up to 3 heteroatoms (specifically O or N); if n is 0 then CR9R10 = aryl or heteroaryl. |
