| 摘要 |
NEW MATERIAL:A compound of formula I [R1,R2,R3 are alkyl, alkoxy, aralkyl, aryl; R4 to R7 are alkyl, H, alkoxy, aralkyl, aryl, halogen, amino, (di)alkylamino, OH, but at least one of R4 to R7 is 5-20C alkyl; R8 is H, alkyl, alkoxy; R9 to R12 are H, alkyl, alkoxy, arakyl, aryl, halogen, nitro, amino, (di)alkylamino, sulfone, OH]. EXAMPLE:A compound of formula II. USE:A recording and memorizing material. PREPARATION:1-Octadecyl-3,3-dimethyl-5-dodecyl-2-methyleneindolenine obtained from 2,3,3-trimethyl-5-dodecylindolenine and p-dodecylphenylhydrazine hydrochloride obtained by the diazo reaction of p-dodecylaniline as a starting substance is dropwise added to a 4-nitro-2-nitrosophenol.chloroform solution, refluxed and cooled. |
