Process for the preparation of 5-fluoroanthranilic alkyl esters and/or
5-fluoroanthranilic acid
    2.
    发明授权
    Process for the preparation of 5-fluoroanthranilic alkyl esters and/or 5-fluoroanthranilic acid 失效
    5-氟邻氨基烷基酯和/或5-氟邻氨基苯甲酸的制备方法

    公开(公告)号:US5543550A

    公开(公告)日:1996-08-06

    申请号:US319306

    申请日:1994-10-06

    CPC分类号: C07C227/06

    摘要: The present invention relates to a process for the preparation of 5-fluoroanthranilic alkyl esters and/or 5-fluoroanthranilic acid, which comprises dissolving a 3-fluorobenzoic alkyl ester in sulfuric acid and reacting the solution with a nitrating acid at from -10.degree. to 30.degree. C., then adding water, separating off the nitrated reaction product and reacting it with hydrogen at from 50.degree. to 120.degree. C. under elevated pressure in the presence of a catalyst comprising a metal of the platinum group and sulfur, and, if desired, removing 5-fluoroanthranilic alkyl esters by distillation and hydrolyzing them to give 5-fluoroanthranilic acid.

    摘要翻译: 本发明涉及5-氟邻氨基烷基酯和/或5-氟邻氨基苯甲酸的制备方法,该方法包括将3-氟苯甲酸烷基酯溶解在硫酸中,并使该溶液与-10℃的硝酸反应 30℃,然后加入水,分离硝化反应产物,并在50-120℃下,在包含铂族金属和硫的催化剂存在下,在高压下反应, 如果需要,通过蒸馏除去5-氟邻氨基烷基酯并水解,得到5-氟邻氨基苯甲酸。

    Process for the preparation of hydroxycarboxanilides
    3.
    发明授权
    Process for the preparation of hydroxycarboxanilides 失效
    羟基羧酰苯胺的制备方法

    公开(公告)号:US5631403A

    公开(公告)日:1997-05-20

    申请号:US493272

    申请日:1995-06-21

    摘要: The present invention relates to a process for the preparation of hydroxycarboxanilides of the formula (1) ##STR1## in which R.sup.1 and R.sup.2 are identical or different and are hydrogen, halogen, a nitro group, a cyano group, a straight-chain or branched alkyl, alkenyl, alkynyl or alkoxy group having 1 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, a cycloalkyl group having 6 to 12 carbon atoms or an aryl group having 6 to 12 carbon atoms, R.sup.3 is hydrogen or a straight-chain or branched alkyl group having 1 to 12 carbon atoms and n is an integer from 1 to 12, by reacting a halocarboxanilide of the formula (2) ##STR2## in which R.sup.1, R.sup.2, R.sup.3 and n have the same meaning as in formula (1) and Hal is chlorine, bromine or iodine, with a basic compound in a solvent mixture comprising water and one or more polar aprotic solvents at a temperature of 40.degree. to 180.degree. C.

    摘要翻译: 本发明涉及制备式(1)的羟基羧酰苯胺的方法,其中R 1和R 2相同或不同,为氢,卤素,硝基,氰基, 具有1至12个碳原子的直链或支链烷基,烯基,炔基或烷氧基,具有7至12个碳原子的芳烷基,具有6至12个碳原子的环烷基或具有6至12个碳原子的芳基,R3是 氢或具有1至12个碳原子的直链或支链烷基,n为1至12的整数,通过使式(2)的卤代甲酰苯胺(2)反应,其中R 1,R 2,R 3和 n具有与式(1)中相同的含义,Hal是氯,溴或碘,在含有水和一种或多种极性非质子溶剂的溶剂混合物中,在40至180℃的温度下使用碱性化合物。

    Process for the preparation of o-acyloxycarboxanilides
    4.
    发明授权
    Process for the preparation of o-acyloxycarboxanilides 失效
    邻酰氧基甲酰苯胺的制备方法

    公开(公告)号:US5693852A

    公开(公告)日:1997-12-02

    申请号:US597884

    申请日:1996-02-07

    CPC分类号: C07C231/12 C07C235/16

    摘要: The present invention relates to a process for the preparation of O-acyloxycarboxanilides of the formula (I) ##STR1## in which R is a radical having 1 to 6 carbon atoms, n is an integer from 1 to 10, R.sup.1 is hydrogen or an alkyl radical having 1 to 12 carbon atoms, R.sup.2 and R.sup.3 are identical or different and are hydrogen, an alkyl radical having 1 to 12 carbon atoms, an aryl radical having 6 to 12 carbon atoms, a cycloalkyl radical having 5 to 12 carbon atoms in the ring, an alkenyl or alkynyl radical having 3 to 12 carbon atoms, NO.sub.2, F, Cl, Br or CN, by reacting a chlorocarboxanilide of the formula (II) ##STR2## in which n, R.sup.1, R.sup.2 and R.sup.3 have the abovementioned meaning, with an alkali metal carboxylate of the formula (III) R--COOMe (III), in which R has the abovementioned meaning and Me is an alkali metal, in the presence of an inert solvent and of a carboxylic acid having 1 to 6 carbon atoms, at 50.degree. to 200.degree. C.

    摘要翻译: 本发明涉及一种制备式(I)的O-酰氧基甲酰苯胺的方法,其中R为具有1至6个碳原子的基团,n为1至10的整数,R 1为 氢或具有1至12个碳原子的烷基,R 2和R 3相同或不同,为氢,具有1至12个碳原子的烷基,具有6至12个碳原子的芳基,环烷基具有5至12个 通过使式(II)的氯代甲酰苯胺(II)反应,其中n,R 1,R 2,R 3, R2和R3具有上述含义,与式(III)的碱金属羧酸盐反应,其中R为具有上述含义的R-COOMe(III),Me为碱金属,在惰性溶剂存在下, 具有1至6个碳原子的羧酸,在50至200℃。

    Process for the preparation of glycoloylanilides
    5.
    发明授权
    Process for the preparation of glycoloylanilides 失效
    糖基酰苯胺的制备方法

    公开(公告)号:US5616799A

    公开(公告)日:1997-04-01

    申请号:US423522

    申请日:1995-04-17

    摘要: A process for the preparation of glycoloylanilide of the formula (G) ##STR1## is recited that involves reacting a nitrobenzene with hydrogen and, if desired, with a carbonyl compound, in the presence of a noble metal catalyst and a solvent, reacting the compound produced with chloroacetyl chloride, reacting the resulting product with a benzyl alcohol and with a base, or reacting the resulting compound with an O-benzylglycoloyl chloride, and debenzylating the resulting benzylglycoloylanilide product by reacting with hydrogen in the presence of a noble metal catalyst. The invention also relates to a process for the preparation of O-benzylglycoloylanilide.

    摘要翻译: 描述了制备式(G)的葡糖酰苯胺的方法(G),其包括在贵金属催化剂和溶剂的存在下使硝基苯与氢反应,如果需要,与羰基化合物反应, 使所得化合物与氯乙酰氯反应,使所得产物与苄醇和碱反应,或使所得化合物与O-苄基乙酰氯反应,并将所得苄基乙酰苯胺产物在贵金属存在下与氢反应脱苄基化 催化剂。 本发明还涉及制备O-苄基乙酰苯胺的方法。

    Process for the preparation of 2,2'-dichloro-hydrazobenzene
    6.
    发明授权
    Process for the preparation of 2,2'-dichloro-hydrazobenzene 失效
    制备2,2'-二氯 - 苯肼的方法

    公开(公告)号:US4217307A

    公开(公告)日:1980-08-12

    申请号:US927856

    申请日:1978-07-25

    CPC分类号: C07C241/02

    摘要: The catalytic hydrogenation of o-nitro-chlorobenzene in aqueous alkali metal hydroxide solution with addition of an aromatic non-watermiscible solvent at an elevated temperature and under pressure using a noble metal catalyst and a polycyclic quinone as a co-catalyst leads to high and well-reproducible yields of 2,2'-dichloro-hydrazobenzene when the quinone is a derivative of anthraquinone, especially a hydroxy-anthraquinone. The product is obtained in so high a quality that it can be transformed without isolation or purification into 3,3'-dichlorobenzidine.

    摘要翻译: 使用贵金属催化剂和多环醌作为助催化剂,在升高的温度和压力下加入芳族非水溶性溶剂,邻位硝基氯苯在碱金属氢氧化物水溶液中的催化氢化导致高和良好 - 当醌是蒽醌衍生物,特别是羟基 - 蒽醌时,可以制得2,2'-二氯 - 苯肼的重复产率。 该产品的质量非常高,可以不经分离或纯化转化成3,3'-二氯联苯胺。

    Process for the preparation of O-aminothiophenols
    7.
    发明授权
    Process for the preparation of O-aminothiophenols 失效
    制备O-氨基噻吩酚的方法

    公开(公告)号:US3931321A

    公开(公告)日:1976-01-06

    申请号:US517791

    申请日:1974-10-24

    IPC分类号: C07C85/11

    摘要: Preparation and isolation in substance of ortho-aminothiphenols by the reduction of ortho-chloronitrobenzenes with hydrogensulfides or sulfides, subsequent neutralization in the presence of sulfites, hydrogensulfites or disulfites, separation and following purification of the crude products. The ortho-aminothiophenols are obtained in very good yields and with a high degree of purity. Oxydation to the disulfide compound is avoided by the processes of the invention.

    摘要翻译: 通过用氢硫化物或硫化物还原邻氯硝基苯,随后在亚硫酸盐,亚硫酸氢盐或亚硫酸氢盐存在下中和,分离和纯化粗产物,制备和分离邻氨基苯酚的物质。 邻氨基苯硫酚以非常好的产率和高纯度的获得。 通过本发明的方法避免了二硫化物化合物的氧化。