| 摘要 |
<p>Phosphoric ester (I) production comprises: (a) reacting phosphorous oxychloride with naphthol at a molar ratio of at least 1.3:1 in the presence of a metal halide, and removing unreacted phosphorous oxychloride; and (b) reacting the product with phenol at a molar ratio (of chlorine in the product to phenol) of 1:1-1.5, and removing hydrogen chloride byproduct. Production of a phosphoric ester of formula (I) comprises: (a) reacting phosphorous oxychloride with naphthol at a molar ratio of at least 1.3:1 in the presence of a metal halide, and removing unreacted phosphorous oxychloride; and (b) reacting the product with phenol at a molar ratio (of chlorine in the product to phenol) of 1:1-1.5, and removing hydrogen chloride by-product. [Image] n : 1 or 2.</p> |
