| 摘要 |
PURPOSE:To obtain a compound useful as an electron accepting compound for recording materials, such as photosensitive paper, pressure or heat sensitive paper, by reacting a hydroxy-substituted benzoic acid with a sulfonic acid ester of an alpha-alkyl-beta-aryloxyalcohol. CONSTITUTION:An alpha-alkyl-beta-aryloxyalcohol is reacted with a substituted sulfonyl chloride in the presence of a base (e.g., alkali hydroxide) in a solvent, such as acetonitrile, at 0-60 deg.C to provide a sulfonic acid ester, which is then reacted with a hydroxy-substituted benzoic acid in the presence of a base (e.g., potassium hydroxide) in a solvent, such as dimethylformamide, at 60-160 deg.C to readily afford the objective substance hydroxy-substituted benzoic acid ester of high purity. |
