| 摘要 |
PURPOSE:To improve the durability in repeated photochrominism by coupling a specific indolenine derivative with a specific nitroso-hydroxy derivative. CONSTITUTION:An indolenine derivative of formula IV is obtained by reacting an amine derivative of formula I (wherein Rf is F or a polyfluoroalkyl; m>=2, ring A is an aromatic hydrocarbon ring that may be substituted by Rf and other groups or an aromatic heterocyclic ring), a hydrazine derivative of formula II obtained by diazotizing and reducing the amino derivative and a ketone of formula III (wherein R<2> to R<4> are each H, a 1-25C hydrocarbon group, alkoxy, halogen, ester, cyano, nitro, ((thio)ether, etc.), followed by the Fischer indole reaction. Then, a nitroso-hydroxy derivative of formula VI is obtained by nitrosating a hydroxy compound of formula V (wherein ring B is identical to ring A). Subsequently, the indolenine derivative is made to react with a compound of formula VII (wherein X is SO3C6H4CH3; R<1> is identical to R<2>) and then with the nitroso-hydroxy derivative to obtain a photochromic material. |
