Method for Producing 5-Halo-2,4,6-Trifluoroisophthalic Acid
    123.
    发明申请
    Method for Producing 5-Halo-2,4,6-Trifluoroisophthalic Acid 审中-公开
    5-卤代-2,4,6-三氟间苯二甲酸的制备方法

    公开(公告)号:US20080146839A1

    公开(公告)日:2008-06-19

    申请号:US11908870

    申请日:2006-03-16

    IPC分类号: C07C63/70 C07C25/13

    摘要: The invention relates to a method for producing 5-halo-2,4,6-tifluoroisophthalic acid of formula (I), wherein X represents F, Cl, Br, or I, by hydrolysis of 5-halo-2,4,6-trifluoroisophthalodinitrile of formula (II). Said invention is characterised in that in a first step, isophthalodinitrile (II) or a solution containing isophthalodinitrile (II) is reacted with a concentrated sulphuric acid at room temperature in order to form a 5-halo-2,4,6-trifluoroisophthalodiamide of general formula (III), and is, subsequently, heated and in a second step, isophthalic acid (I) is produced after additional heating and addition of water.

    摘要翻译: 本发明涉及一种制备式(I)的5-卤代-2,4,6-三氟间苯二甲酸的方法,其中X代表F,Cl,Br或I,通过5-卤代-2,4,6 (II)的三氟间苯二腈。 本发明的特征在于,在第一步中,室温下将间苯二腈(II)或含有间苯二腈(II)的溶液与浓硫酸反应,以形成5-卤代-2,4,6-三氟间苯二甲酰胺, 通式(III),并且随后被加热,在第二步中,在另外加热和加入水之后产生间苯二甲酸(I)。

    Preparation of -4-thioalkybrobenzene derivatives
    124.
    发明授权
    Preparation of -4-thioalkybrobenzene derivatives 有权
    4-硫代烷基苯衍生物的制备

    公开(公告)号:US07301034B2

    公开(公告)日:2007-11-27

    申请号:US10332861

    申请日:2001-07-17

    IPC分类号: C07D261/04 C07D261/08

    摘要: A process for preparing 4-thioalkylbromobenzene derivatives of the formula I where: R1 is C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, C3-C8-cycloalkyl, halogen, R2 is C1-C6-alkyl, C1-C6-alkoxy, C3-C8-cycloalkyl, C2-C6-alkenyl, cyano or a heterocyclic radical, R3 is C1-C6-alkyl, which comprises reacting a compound of the formula II, in which R1 and R2 are as defined above, with a dialkyl disulfide of the formula III R3—S—S—R3III in the presence of a nitrite and a catalyst in a suitable solvent is described.

    摘要翻译: 制备式I的4-硫代烷基溴苯衍生物的方法,其中:R 1是C 1 -C 6 - 烷基,C 1 -C 6 - C 1 -C 6 - 卤代烷基,C 1 -C 6 - 烷氧基,C 1 -C 6 - C 6 - 卤代烷氧基,C 3 -C 8 - 环烷基,卤素,R 2是C 1 -C 6烷基, C 1 -C 6 - 烷基,C 1 -C 6 - 烷氧基,C 3 - C 8 - 环烷基,C 2 -C 6 - 烯基,氰基或杂环基,R 3是 C 1 -C 6 - C 6 - 烷基,其包括使式II化合物(其中R 1和R 2) / SUP>如上所定义,与式III的二烷基二硫化物<?in-line-formula description =“In-line Formulas”end =“lead”?> R 3 -SSR < 描述了在合适的溶剂中存在亚硝酸盐和催化剂的情况下,在实施例3中描述的“In-line-formula description =”In-Line Formulas“end =”tail“?>

    Substituted thiopyridines
    130.
    发明授权
    Substituted thiopyridines 失效
    取代的硫代吡啶类

    公开(公告)号:US06262273B1

    公开(公告)日:2001-07-17

    申请号:US09254569

    申请日:1999-03-10

    IPC分类号: C07D21371

    CPC分类号: C07D213/71

    摘要: Substituted thiopyridines of the general formula I where n is 1 or 2; R1 is chlorine, C1-C3-fluoroalkyl, nitro or methylsulfonyl; R2 is a C1-C10-alkyl, C2-C10-alkenyl or C2-C10-alkynyl radical, in each case unsubstituted or substituted by halogen, C1-C4-alkoxy, C1-C4-alkoxycarbonyl, di-(C1-C4-alkylamino) carbonyl, cyano or nitro, a C3-C8-cycloalkyl radical, or a C1-C4-alkylenephenyl, phenyl or naphthyl radical which is unsubstituted or substituted in the phenyl moiety by halogen, C1-C3-alkyl, C1-C3-alkoxy, trifluoromethyl, cyano or nitro.

    摘要翻译: 通式Iwheren的取代的硫代吡啶为1或2; R 1为氯,C 1 -C 3 - 氟代烷基,硝基或甲基磺酰基; R 2为C 1 -C 10 - 烷基,C 2 -C 10 - 烯基或C 2 -C 10 - 炔基 C 1 -C 4 - 烷氧基羰基,C 1 -C 4 - 烷基氨基羰基,氰基或硝基,C 3 -C 8环烷基或C 1 -C 4亚烷基苯基, 苯基或萘基,其在苯基部分被卤素,C 1 -C 3 - 烷基,C 1 -C 3 - 烷氧基,三氟甲基,氰基或硝基取代。