| 摘要 |
PURPOSE:To obtain the subject compound having excellent performance as a color developer of pressure-sensitive copying paper by reacting a salicylic acid derivative simultaneously with a benzyl halide derivative and a styrene derivative in the presence of an acid and reacting the obtained product with a polyvalent metal compound. CONSTITUTION:A salicylic acid derivative of formula (1) (wherein R1 is H, an alkyl, aralkyl or aryl; and X1 and X2 are each H, an alkyl, alkoxyl, aralkyl, aryl or halogen) (e.g. salicylic acid) is reacted simultaneously with a benzyl halide derivative of formula (2) (wherein R2 and R3 are each H or an alkyl; X3 is a halogen; and X4 and X5 are each H, an alkyl, alkoxyl, aralkyl, aryl or a halogen) (e.g. benzyl chloride) and a styrene derivative of formula (3) (wherein R4 to R6 are each H or an alkyl; and X6 and X7 are each H, an alkyl, alkoxyl, aralkyl, aryl or a halogen) (e.g. styrene) in the presence of an acid (e.g. sulfuric acid), and the obtained product is reacted with a polyvalent metal compound (e.g. zinc sulfate). |
