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    • 4. 发明授权
    • Process for the preparation of hydroxynapthalenes
    • 羟基萘制备方法
    • US5981806A
    • 1999-11-09
    • US33195
    • 1998-03-02
    • Thomas Pelster
    • Thomas Pelster
    • B01J31/02C07B61/00C07C37/04C07C39/14C07C213/00C07C215/86C07D241/38
    • C07D241/38C07C213/00C07C37/04
    • The present invention relates to a process for the preparation of hydroxynaphthalenes of formula (I) ##STR1## wherein n represents a number from 1 to 6,X denotes C.sub.1 -C.sub.6 alkyl, halogen, carboxyl, carboxylic acid ester, nitro, chlorosulphonyl, arylsulphonyl, hydroxyl, alkoxy, acyloxy, or an amino or aminosulphonyl that is unsubstituted or N-substituted with alkyl or aryl, or two radicals X, together with the adjacent carbon atoms to which they are bonded, form a fused-on aromatic, cycloaliphatic, or heterocyclic ring, andm denotes a number from 0 to 6, wherein if m is greater than 1, then each X can have different or identical meanings,by reacting(1) a naphthalenesulphonic acid of formula (II) or a salt thereof ##STR2## wherein n and m have the above meanings and X.sub.1 has the same meaning as X or is SO.sub.3 H, with(2) alkali in the presence of(3) an alkylated urea derivative.
    • 本发明涉及一种制备式(I)的羟基萘的方法,其中n表示1至6的数,X表示C 1 -C 6烷基,卤素,羧基,羧酸酯,硝基,氯磺酰基,芳基磺酰基,羟基, 烷氧基,酰氧基或未被取代或被烷基或芳基取代的氨基或氨基磺酰基,或两个基团X与它们所连接的相邻碳原子一起形成稠合的芳族,脂环族或杂环 ,m表示0至6的数,其中如果m大于1,则每个X可以具有不同或相同的含义,通过使(1)式(II)的萘磺酸或其盐,其中n和m 具有上述含义,X 1与X相同或为SO 3 H,(2)在(3)烷基化脲衍生物存在下的碱。