Process for preparation of ketones
    1.
    发明授权
    Process for preparation of ketones 失效
    酮的制备方法

    公开(公告)号:US5481029A

    公开(公告)日:1996-01-02

    申请号:US233622

    申请日:1994-04-26

    摘要: A process for preparing ketones, for example CF.sub.3 C(O)CH.sub.3, CF.sub.3 C(O)CH.sub.2 C(O)CF.sub.3 and CF.sub.3 C(O)CF.sub.2 H, in which .beta.-ketoesters are transesterified and decarboxylated using a carboxylic acid, for example trifluoroacetic acid, in the presence of a catalyst, particularly an "onium" salt of a carboxylic acid or an effective amount of a proton-donating acid, preferably a sulfonic acid such as alkyl- or arylsulfonic acids, or a mineral acid. The process is advantageously carried out in the absence of water, so that no formation of acetals or hydrates occurs, and no dehydrating step is needed. The process is simple to carry out, and if transesterification is carried out with a sufficiently active carboxylic acid, for example with trifluoroacetic acid, the presence of an additional catalyst is unnecessary.

    摘要翻译: 制备酮的方法,例如CF 3 C(O)CH 3,CF 3 C(O)CH 2 C(O)CF 3和CF 3 C(O)CF 2 H),其中β-酮酯使用羧酸(例如三氟乙酸)进行酯交换和脱羧 存在催化剂,特别是羧酸的“鎓”盐或有效量的质子供体酸,优选磺酸如烷基或芳基磺酸或无机酸。 该方法有利地在没有水的情况下进行,使得不会发生缩醛或水合物的形成,并且不需要脱水步骤。 该方法很容易进行,如果用足够活泼的羧酸(例如三氟乙酸)进行酯交换反应,则不需要另外的催化剂的存在。

    Synthesis of low-fluoride organic compounds
    2.
    发明授权
    Synthesis of low-fluoride organic compounds 失效
    低氟有机化合物的合成

    公开(公告)号:US06252105B1

    公开(公告)日:2001-06-26

    申请号:US09348072

    申请日:1999-07-06

    IPC分类号: C07C6963

    摘要: Organic compounds, e.g. fluorinated organic compounds such as fluorinated carboxylic acids or fluorinated carboxylic acid chlorides, may contain small amounts of carboxylic acid fluorides, hydrogen fluoride or hydrolyzable fluoride, which during the preparation of derivatives of the fluorinated organic compounds, for example by esterification, may yield corrosive fluorides or hydrogen fluoride. The invention is a method for the synthesis and/or purification of preferably fluorinated organic compounds such as carboxylic acids, carboxylic acid chlorides and derivatives such as esters thereof, starting from corresponding carboxylic acid chlorides containing acid fluorides or hydrolyzable fluoride, and alcohols under the catalytic action of “onium” salts of carboxylic acids, to obtain products which have a low fluoride content. Alternatively, an inorganic oxide adsorbent is utilized. The method is especially suitable for the synthesis of esters of trifluoroacetic acid, chlorodifluoroacetic acid, trifluoroacetoacetic acid and/or difluoroacetoacetic acid.

    摘要翻译: 有机化合物,例如 含氟有机化合物如氟化羧酸或氟化羧酸氯化物可含有少量羧酸氟化物,氟化氢或水解性氟化物,其在氟化有机化合物衍生物的制备过程中,例如通过酯化反应,可产生腐蚀性氟化物 或氟化氢。 本发明是一种合成和/或纯化优选氟化有机化合物如羧酸,羧酸氯化物及其衍生物如酯的方法,起始于含有酸性氟化物或可水解氟化物的相应的羧酸氯化物和催化剂下的醇 羧酸的“鎓”盐的作用,以获得具有低氟含量的产物。 或者,使用无机氧化物吸附剂。 该方法特别适用于三氟乙酸,氯二氟乙酸,三氟乙酰乙酸和/或二氟乙酰乙酸的酯的合成。

    Process for obtaining a purified hydrofluoroalkane
    4.
    发明申请
    Process for obtaining a purified hydrofluoroalkane 审中-公开
    获得纯化氢氟烷烃的方法

    公开(公告)号:US20100181186A1

    公开(公告)日:2010-07-22

    申请号:US12668779

    申请日:2008-07-16

    摘要: The invention consequently relates, in one aspect, to a process for obtaining a hydrofluoroalkane comprising at least two carbon atoms, which is purified of unsaturated organic impurities, according to which the hydrofluoroalkane containing organic impurities including (chloro)fluoro olefins is subjected to at least one purification treatment with bromine or BrCl, preferably in the presence of, an initiator. The process is suitable, for example, to purify 1,1,1,2-tetrafluoroethane. A further aspect concerns the application of LEDs or OLEDs to support chemical reactions of the gas-gas, liquid-liquid or gas-liquid type, and a respective reactor.

    摘要翻译: 因此,本发明在一方面涉及一种获得含有至少两个碳原子的氢氟烷烃的方法,该方法是不饱和有机杂质的纯化,根据该方法,含有(氯)氟烯烃的有机杂质的含氟氟烷烃至少经受 用溴或BrCl进行一次净化处理,优选在引发剂存在下进行。 该方法例如用于纯化1,1,1,2-四氟乙烷是合适的。 另一方面涉及LED或OLED的应用以支持气体,液体或气液型以及相应的反应器的化学反应。

    Production of carbonyl fluoride
    5.
    发明申请
    Production of carbonyl fluoride 失效
    生产碳酰氟

    公开(公告)号:US20070197826A1

    公开(公告)日:2007-08-23

    申请号:US10591783

    申请日:2005-02-09

    IPC分类号: C07C59/245

    CPC分类号: C01B32/80

    摘要: Carbonyl fluoride, which can also be used as an etching gas, can be prepared by photochemical oxidation of chlorodifluoromethane or trifluoromethane with light, for example with light of a wavelength ≧280 nm in the presence of chlorine.

    摘要翻译: 也可以用作蚀刻气体的碳酰氟可以通过用氯代二氟甲烷或三氟甲烷用光进行光化学氧化来制备,例如在氯存在下,例如波长> 280nm的光。

    Production of N-acyl compounds
    6.
    发明申请
    Production of N-acyl compounds 审中-公开
    N-酰基化合物的制备

    公开(公告)号:US20060217533A1

    公开(公告)日:2006-09-28

    申请号:US11372167

    申请日:2006-03-10

    IPC分类号: C07K1/02 C07C231/02

    摘要: A process for producing a compound containing an acylated nitrogen atom in which the adduct compound formed from an N-protonated cation and a chloride, bromide or iodide anion or the free nitrogen base is reacted with an acyl halide, preferably an acyl chloride, in the presence of an acid that drives off the released hydrogen chloride (HCl), hydrogen bromide (HBr) or hydrogen iodide (HI).

    摘要翻译: 一种制备含有酰化氮原子的化合物的方法,其中将由N-质子化阳离子和氯化物,溴化物或碘化物阴离子形成的加合物化合物或游离氮碱与酰卤,优选酰氯反应, 存在释放氯化氢(HCl),溴化氢(HBr)或碘化氢(HI)的酸。

    Production of carbonyl fluoride
    7.
    发明授权
    Production of carbonyl fluoride 失效
    生产碳酰氟

    公开(公告)号:US07880039B2

    公开(公告)日:2011-02-01

    申请号:US10591783

    申请日:2005-02-09

    IPC分类号: C07C19/08 C07C21/18 C07C51/58

    CPC分类号: C01B32/80

    摘要: Carbonyl fluoride, which can also be used as an etching gas, can be prepared by photochemical oxidation of chlorodifluoromethane or trifluoromethane with light, for example with light of a wavelength ≧280 nm in the presence of chlorine.

    摘要翻译: 也可以用作蚀刻气体的碳酰氟可以通过用氯代二氟甲烷或三氟甲烷用光进行光化学氧化来制备,例如在氯存在下用波长≥280nm的光进行光化学反应。