| 摘要 |
NEW MATERIAL:The compound of formula I (R1 is H or 1-4C alkyl; R2 is 2-12C alkyl or aryl). EXAMPLE:[N-(4-hydroxyphenyl)-butane sulfonamide. USE:A color-developing agent to be used in heat-sensitive recording material or pressure-sensitive recording material in combination with a leuco dye. PREPARATION:The compound of formula I can be produced e.g., according to the reaction formula by reacting an aminophenol compound of formula II (e.g., p-aminophenol or p-methylaminophenol) with a snlfonic acid halide compound of formula III (e.g., ethanesulfonyl chloride) usually in the presence of a solvent (e.g., THF or dioxane). |
