| 摘要 |
NEW MATERIAL:A compound of formula I (R is H, methyl, ethyl, propyl, or butyl). EXAMPLE:A compound of formula II. USE:Coloring matter for heat-sensitive transfer recording ink manufacture, having clear cyan color, suitable for obtaining full-color through the combination with both yellow and fuchsine-colored coloring matters. PREPARATION:For example, a compound of formula III is made to react with KCN or NaCN in water or an organic solvent such as DMF, N-methylpyrrolidone. |
