Method for producing o-chloromethyl benzoic acid chlorides
    1.
    发明授权
    Method for producing o-chloromethyl benzoic acid chlorides 失效
    邻氯甲基苯甲酸氯化物的生产方法

    公开(公告)号:US07034181B1

    公开(公告)日:2006-04-25

    申请号:US10130821

    申请日:2000-11-27

    IPC分类号: C07C51/58

    CPC分类号: C07C51/60 C07C63/10

    摘要: The invention relates to a method for producing o-chloromethyl benzoic acid chlorides of formula (I), in which R1 to R4 can be the same or different and represent hydrogen C1–C4 alkyl, halogen or trifluoromethyl, by reaction benzo condensed lactones of formula (II), in which R1 to R4 have the above-mentioned meaning, with thionyl chloride. The inventive method is characterized in that the reaction is carried out in the presence of catalytic quantities of a Lewis acid and in the presence of catalytic quantities of a phosphine derivative.

    摘要翻译: 本发明涉及一种制备式(I)的邻氯甲基苯甲酰氯的方法,其中R 1至R 4可以相同或不同,表示氢 C 1 -C 4烷基,卤素或三氟甲基,通过反应式(II)的苯并稠合内酯,其中R 1至R 4, SUP> 4 具有上述含义,与亚硫酰氯。 本发明的方法的特征在于反应在催化量的路易斯酸存在下和在催化量的膦衍生物的存在下进行。

    Method for producing o-chloromethyl benzenecarbonyl chlorides
    3.
    发明授权
    Method for producing o-chloromethyl benzenecarbonyl chlorides 失效
    邻苯甲酰氯的制备方法

    公开(公告)号:US06734322B1

    公开(公告)日:2004-05-11

    申请号:US10130826

    申请日:2002-05-23

    IPC分类号: C07C5158

    CPC分类号: C07C51/09 C07C63/04

    摘要: The invention relates to a method for producing o-choromethyl benzenecarbonyl chlorides of formula (I), wherein R1-R4 can be the same or different and stand for hydrogen, C1-C4-alkyl, halogen or trifluoromnethyl, by converting benzocondensed lactones of formula (II), wherein R1-R4 have the aforementioned meaning, with gaseous or liquid phosgene and the dimers or trimers thereof. The inventive method is characterized in that the conversion is carried out in the presence of catalytical amounts of a Lewis acid and catalytical amounts of a phosgenation catalyst

    摘要翻译: 本发明涉及一种制备式(I)的邻氯甲基苯甲酰氯的方法,其中R 1 -R 4可以相同或不同,代表氢,C 1 -C 4 - 烷基,卤素或三氟甲基, 通过用气态或液体光气及其二聚体或三聚体转化其中R 1 -R 4具有上述含义的式(II)的苯并二化内酯。 本发明的方法的特征在于转化在催化量的路易斯酸和催化量的光气化催化剂

    Method for chlorinating ketones
    5.
    发明授权
    Method for chlorinating ketones 失效
    氯化酮的方法

    公开(公告)号:US06337425B1

    公开(公告)日:2002-01-08

    申请号:US09646186

    申请日:2000-09-14

    IPC分类号: C07C1702

    摘要: In a process for chlorinating ketones which, apart from the carbonyl group, are inert in respect of triarylphosphine dichlorides, except for cyclopropyl methyl ketone, in which the ketones are reacted with a chlorinating agent in the presence of triarylphosphine oxides, the amount of triarylphosphine oxide is from 0.1 to 10 mol %, based on the amount of ketone. The ketones preferably have a least one CH-acid proton in the &agr; position to the carbonyl group.

    摘要翻译: 在氯化酮的过程中,除了在三芳基氧化膦存在下酮与氯化剂反应的环丙基甲基酮以外,除了羰基外,它们是三芳基膦二氯化物是惰性的,三芳基氧化膦 基于酮的量为0.1〜10摩尔%。 酮优选在羰基的α位置具有至少一个CH-酸质子。

    Method for purifying acid chlorides
    6.
    发明授权
    Method for purifying acid chlorides 有权
    酰氯的纯化方法

    公开(公告)号:US06727384B1

    公开(公告)日:2004-04-27

    申请号:US10070762

    申请日:2002-03-12

    IPC分类号: C07C5158

    CPC分类号: C07C51/64 C07C53/42

    摘要: Process for the purification of carbonyl chlorides which have been prepared by reacting carboxylic acids with phosgene or thionyl chloride in the presence of a catalyst adduct, in which the carbonyl chlorides are treated with a hydrohalide of carboxamides of the formula (I) in which R1 is hydrogen or C1- to C3-alkyl; R2 and R3 independently of one another are C1- to C4-alkyl, or R2 and R3 together are a C4- or C5-alkylene chain, and the carbonyl chloride purified in this way is isolated by separation off from the carboxamide hydrohalide phase.

    摘要翻译: 通过使羧酸与光气或亚硫酰氯在催化剂加合物存在下反应制备的羰基氯的方法,其中羰基氯用式(I)的羧酰胺的氢卤化物处理,其中R 1, 1>是氢或C 1至C 3 - 烷基; R 2和R 3彼此独立地为C 1至C 4 - 烷基,或R 2和R 3一起是C 4 - 或C 5-亚烷基链,并且以这种方式纯化的羰基氯 通过与羧酰胺氢卤酸盐相分离而分离。

    Method for producing chlorocarboxylic acid chlorides
    9.
    发明授权
    Method for producing chlorocarboxylic acid chlorides 失效
    氯代羧酸氯化物的制备方法

    公开(公告)号:US06262300B1

    公开(公告)日:2001-07-17

    申请号:US09529811

    申请日:2000-04-20

    IPC分类号: C07C5158

    CPC分类号: C07C51/58 C07C53/50

    摘要: The present invention provides process for the preparation of chlorocarbonyl chlorides of the formula I R1—CHCl—Y—COCl  (I), where R1 is for example hydrogen or C1- to C20-alkyl and Y is for example a saturated or mono- or polyolefinically unsaturated C2-C8-alkylene chain, by reacting lactones with a chlorinating agent in the presence of a urea compound.

    摘要翻译: 本发明提供制备式I的氯代羰基氯的方法,其中R 1是例如氢或C 1 -C 20烷基,Y是例如饱和或单或者不饱和的C 2 -C 8 - 亚烷基链,通过使内酯与 在尿素化合物的存在下进行氯化剂。

    Method for producing isocyanates
    10.
    发明授权
    Method for producing isocyanates 失效
    异氰酸酯的制备方法

    公开(公告)号:US07482481B2

    公开(公告)日:2009-01-27

    申请号:US10492618

    申请日:2002-10-17

    IPC分类号: C07C263/00

    摘要: In a process for preparing isocyanates by reacting the corresponding primary amines with phosgene in an inert solvent, use is made of from 0.01 to 50 mol % of a phosphine oxide, based on the total amount of primary amine and isocyanate formed in the reaction solution.

    摘要翻译: 在惰性溶剂中通过使相应的伯胺与光气反应来制备异氰酸酯的方法中,使用基于反应溶液中形成的伯胺和异氰酸酯的总量为0.01至50摩尔%的氧化膦。