| 摘要 |
PURPOSE:To obtain the title compound useful as a color developing agent for sensitive material of color photography or a synthetic intermediate for functional pigment, etc., in high yield and purity, by introducing a substituent group to the amino group of 5-amino-1-naphthol and reacting the product with carbon dioxide under pressure. CONSTITUTION:The objective compound of formula III can be produced by introducing a substituent group to the amino group of 5-amino-1-naphthol of formula I and reacting the resultant 5-substituted amino-1-naphthol of formula II (Y is carbonyl or sulfonyl; R is H, alkyl, aralkyl, alkoxy, aryl, aryloxy, etc.) with carbon dioxide under a pressure of 5-50kg/cm<2>, preferably 10-30kg/cm<2> at 50-250 deg.C, especially 80-180 deg.C for 3-24hr. The introduction of a substituent group into the amino group of the compound of formula I can be carried out by any conventional processes such as reaction with carboxylic acid chloride, sulfonic acid chloride, etc. |
