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    • 4. 发明授权
    • Process for the manufacture of aromatic sulphonic acid esters of
aromatic amino-hydroxy compounds
    • 芳香族氨基 - 羟基化合物的芳香族磺​​酸酯的制造方法
    • US4158670A
    • 1979-06-19
    • US879852
    • 1978-02-22
    • Rolf MullerJoachim RibkaHorst Tappe
    • Rolf MullerJoachim RibkaHorst Tappe
    • C07B61/00B01J31/00B01J31/02C07C20060101C07C67/00C07C301/00C07C303/28C07C309/63C07C309/72C07C143/68
    • C07C303/28
    • A process for the manufacture of esters of aromatic sulphonic acids and aromatic aminohydroxy compounds, of the formula Ih.sub.2 n--a--o--so.sub.2 --b (i)comprising reacting an aromatic aminohydroxy compound of the formula IIh.sub.2 n--a--oh (ii)having a pK.sub.a value of from 8.5 to 10.1, with a sulphochloride of the formula IIIcl--SO.sub.2 --B (III)whereinA is phenylene, substituted phenylene, naphthylene or substituted naphthylene,B is phenyl, substituted phenyl, naphthyl or substituted naphthyl, and both A and B are free from --COOH and --SO.sub.3 H substituents;The reaction taking place in a reaction medium consisting essentially of water and a water-immiscible organic solvent for the sulphochloride,At a temperature of from 0.degree. to 95.degree. C., at a pH which is determined from and associated with the pK.sub.a value of said aromatic aminohydroxy compound of formula II by the equationpK.sub.a -pH=0.5 to -1.5, and in the presence of a phase transfer catalyst.
    • 制备式I H 2 N-AO-SO 2 -B(I)的芳族磺酸和芳族氨基羟基化合物的酯的方法,包括使具有式II的芳族氨基羟基化合物H 2 N-A-OH(II) 其中A为亚苯基,取代亚苯基,亚萘基或取代亚萘基,B为苯基,取代的苯基,萘基或取代的萘基,并且两者均为 A和B不含-COOH和-SO 3 H取代基; 在pH为0〜95℃的温度下,在由碱性水溶液组成的反应介质中进行反应和在硫酸盐的水不溶性有机溶剂中反应,其pH值由pKa值 所述式II的芳族氨基羟基化合物通过PKa-pH = 0.5至-1。