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    Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes for their synthesis
    101.
    发明授权
    Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes for their synthesis 失效
    取代的1,1,1-三芳基-2,2,2-三氟乙烷及其合成方法

    公开(公告)号：US4912238A

    公开(公告)日：1990-03-27

    申请号：US292049

    申请日：1988-12-30

    Applicant: William B. Alston ,  Roy F. Gratz

    Inventor： William B. Alston ,  Roy F. Gratz

    IPC: C07C17/26 ,  C07C49/813 ,  C07C205/57 ,  C07F9/50

    CPC classification number: C07F9/5022 ,  C07C17/2637 ,  C07C201/14 ,  C07C209/78 ,  C07D307/89

    Abstract: Synthetic procedures to tetraalkyls, tetraacids and dianhydrides substituted 1,1,1-triaryl-2,2,2-trifluoroethanes which comprises: (1) 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethane, (2) 1,1-bis(dicarboxyaryl)-1-aryl-2,2,2-trifluoroethane or (3) cyclic dianhydride or diamine of 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethanes. The synthesis of (1) is accomplished by the condensation reaction of an aryltrifluoromethyl ketone with a dialkylaryl compound. The synthesis of (2) is accomplished by oxidation of (1). The synthesis dianhydride of (3) is accomplished by the conversion of (2) to its corresponding cyclic dianhydride. The synthesis of the diamine is accomplished by the similar reaction of an aryltrifluoromethyl ketone with aniline or alkyl substituted or disubstituted anilines. Also, other derivatives of the above are formed by nucleophilic displacement reactions.

    Abstract translation: 四烷基，四酸和二酐的合成方法取代1,1,1-三芳基-2,2,2-三氟乙烷，其包括：（1）1,1-双（二烷基芳基）-1-芳基-2,2,2-三氟乙烷 ，（2）1,1-双（二羧基芳基）-1-芳基-2,2,2-三氟乙烷或（3）1,1-双（二烷基芳基）-1-芳基-2,2,2-三氟乙烷的环状二酐或二胺， 2-三氟乙烷。 （1）的合成通过芳基三氟甲基酮与二烷基芳基化合物的缩合反应来实现。 （2）的合成通过（1）的氧化实现。 （3）的合成二酐通过（2）转化成其相应的环状二酐来实现。 二胺的合成通过芳基三氟甲基酮与苯胺或烷基取代或二取代的苯胺的类似反应来实现。 此外，上述的其它衍生物通过亲核取代反应形成。

    Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes for their synthesis
    102.
    发明授权
    Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes for their synthesis 失效
    取代的1,1,1-三芳基-2,2,2-三氟乙烷及其合成方法

    公开(公告)号：US4885116A

    公开(公告)日：1989-12-05

    申请号：US159071

    申请日：1988-02-23

    Applicant: William B. Alston ,  Roy F. Gratz

    Inventor： William B. Alston ,  Roy F. Gratz

    IPC: C07C17/26 ,  C07C49/813 ,  C07C205/57 ,  C07F9/50

    CPC classification number: C07F9/5022 ,  C07C17/2637 ,  C07C201/14 ,  C07C209/78 ,  C07C49/813

    Abstract: Synthetic procedures to tetraalkyls, tetraacids and dianhydrides substituted 1,1,1-triaryl-2,2,2-trifluoroethanes which comprises: (1) 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethane, (2) 1,1-bis(dicarboxyaryl)-1-aryl-2,2,2-trifluoroethane or (3) cyclic dianhydride or diamine of 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethanes. The synthesis of (1) is accomplished by the condensation reaction of an aryltrifluoromethyl ketone with a dialkylaryl compound. The synthesis of (2) is accomplished by oxidation of (1). The synthesis dianhydride of (3) is accomplished by the conversion of (2) to its corresponding cyclic dianhydride. The synthesis of the diamine is accomplished by the similar reaction of an aryltrifluoromethyl ketone with aniline or alkyl substituted or disubstituted anilines. Also, other derivatives of the above are formed by nucleophilic displacement reactions.

    Abstract translation: 四烷基，四酸和二酐的合成方法取代1,1,1-三芳基-2,2,2-三氟乙烷，其包括：（1）1,1-双（二烷基芳基）-1-芳基-2,2,2-三氟乙烷 ，（2）1,1-双（二羧基芳基）-1-芳基-2,2,2-三氟乙烷或（3）1,1-双（二烷基芳基）-1-芳基-2,2,2-三氟乙烷的环状二酐或二胺， 2-三氟乙烷。 （1）的合成通过芳基三氟甲基酮与二烷基芳基化合物的缩合反应来实现。 （2）的合成通过（1）的氧化实现。 （3）的合成二酐通过（2）转化成其相应的环状二酐来实现。 二胺的合成通过芳基三氟甲基酮与苯胺或烷基取代或二取代的苯胺的类似反应来实现。 此外，上述的其它衍生物通过亲核取代反应形成。

    Process for the preparation of fluorinated nitroalkanes
    105.
    发明授权
    Process for the preparation of fluorinated nitroalkanes 失效
    制备氟化硝基烷烃的方法

    公开(公告)号：US4518812A

    公开(公告)日：1985-05-21

    申请号：US575636

    申请日：1984-01-31

    Applicant: Bernd Baasner ,  Hermann Hagemann ,  Erich Klauke

    Inventor： Bernd Baasner ,  Hermann Hagemann ,  Erich Klauke

    IPC: C07C67/00 ,  C07C201/00 ,  C07C201/14 ,  C07C205/08 ,  C07C76/02 ,  C07C79/02

    CPC classification number: C07C201/14 ,  C07C205/08

    Abstract: In the conjugated nitrofluorination of an olefin by reacting an olefin of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently is hydrogen, fluorine, chlorine, bromine, alkyl, halogenoalkyl or cycloalkyl, orR.sup.2 and R.sup.4 together are an alkylene radical of 3 to 6 carbon atoms,with hydrogen fluoride and nitric acid to produce an .alpha.-fluorinated nitroalkane of the formula ##STR2## the improvement which comprises effecting the reaction in a vessel protected against corrosion employing about 1 to 1.1 mols of hydrogen fluoride and about 1 to 2 mols of nitric acid per mol of olefin. The process uses much less HF than heretofore and the products are useful intermediates in making herbicides. Some of the products are new.

    Abstract translation: 在烯烃的共轭硝基氟化中，通过使式（IMAGE）的烯烃反应，其中R 1，R 2，R 3和R 4各自独立地是氢，氟，氯，溴，烷基，卤代烷基或环烷基，或者R 2和R 4一起是 具有3至6个碳原子的亚烷基，与氟化氢和硝酸反应以产生下式的α-氟化的硝基烷烃：其中包括在使用约1至1.1摩尔氟化氢的保护反应的容器中进行反应 和约1至2摩尔硝酸/摩尔烯烃。 该方法使用比迄今为止少得多的HF，并且该产品是制备除草剂的有用中间体。 一些产品是新的。

    Process for preparing 1-nitrobenzene-2-alkyloxycarbonyl-5-carboxylic acids
    106.
    发明授权
    Process for preparing 1-nitrobenzene-2-alkyloxycarbonyl-5-carboxylic acids 失效
    制备1-硝基苯-2-烷氧基羰基-5-羧酸的方法

    公开(公告)号：US4507491A

    公开(公告)日：1985-03-26

    申请号：US445008

    申请日：1982-11-29

    Applicant: Werner Wykypiel ,  Wolfgang Tronich

    Inventor： Werner Wykypiel ,  Wolfgang Tronich

    IPC: C07B61/00 ,  B01J31/00 ,  B01J31/02 ,  C07C67/00 ,  C07C201/00 ,  C07C201/08 ,  C07C201/12 ,  C07C205/57 ,  C07C79/46 ,  C07C76/02

    CPC classification number: C07C201/14

    Abstract: To prepare a 1-nitrobenzene-2-alkyloxycarbonyl-5-carboxylic acid, a dialkyl benzene-1,4-dicarboxylate is first nitrated in a customary manner and the dialkyl 1-nitrobenzene-2,5-dicarboxylate compound obtained is subjected to a partial acidic ester hydrolysis without isolating the nitro compound prepared as an intermediate. The acidic ester hydrolysis is carried out in the presence of a catalytic amount of an organic solvent which is completely or partially miscible with water and has a boiling point of above 90.degree. C. and/or of an emulsifier; it is preferably carried out at a temperature between 65.degree. and 110.degree. C.

    Abstract translation: 为了制备1-硝基苯-2-烷氧基羰基-5-羧酸，以常规方式首先硝化二苯基-1,4-二羧酸二烷基酯，将得到的1-硝基苯-2,5-二羧酸二烷基酯化合物 不分离作为中间体制备的硝基化合物的部分酸性酯水解。 酸性酯水解在催化量的与水完全或部分混溶并且沸点高于90℃的有机溶剂和/或乳化剂的存在下进行; 优选在65℃〜110℃的温度下进行。

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