| 摘要 |
NEW MATERIAL:The compound of formula I [X is group of formula II, III, etc.; R1-R4 are H, (substituted) alkyl or alkoxy, halogen, nitro, cyano, etc.; R5 and R6 are H, (substituted) alkyl or aryl, etc.; R7 is (substituted) alkyl, alkoxy, etc.; R8 is H, (substituted) alkyl, halogen, etc.; R9-11 are H or alkyl]. USE:An optical information recording medium. It has absorption peak wavelength in a region of 600-800nm and exhibits high reflectance in a region of 600-870nm in the state of thin film. PREPARATION:The compound of formula I can be produced by the condensation reaction of a compound of formula IV with a methine compound of formula X-CHO in a solvent (e.g., chloroform) in the presence of a catalyst (e.g., piperidine) at 0-100 deg.C. |
