| 摘要 |
NEW MATERIAL:A compound expressed by formula I {X is formulas II-V [R6 and R7 are H, (substituted) alkyl, (substituted) aryl, cyclohexyl, etc.; R8 and R9 are H, (substituted) alkyl, (substituted) alkoxy, OH, halogen, etc.; R10 to R12 are H or alkyl]; R1 to R4 are H, (substituted) alkyl, (substituted) alkoxy, halogen, nitro, cyano, OH, (substituted) amino, etc.; R5 is (substituted) alkyl}. EXAMPLE:A compound expressed by formula VI. USE:An optical information recording medium, having great absorption and reflection for semiconductor laser beams and stable to light, heat, etc. PREPARATION:A compound expressed by formula VII is reacted with a compound expressed by the formula X-N=0 in the presence of an organic base, such as piperidine, preferably in an inert organic solvent, such as ethanol, preferably at 20-80 deg.C for 0.5-5hr. |
