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    Preparation of .alpha.-methylsubstituted carbonyl compounds
    3.
    发明授权
    Preparation of .alpha.-methylsubstituted carbonyl compounds 失效
    α-甲基取代羰基化合物的制备

    公开(公告)号：US4374274A

    公开(公告)日：1983-02-15

    申请号：US186130

    申请日：1980-09-11

    申请人： Gerd Heilen ,  Klaus Halbritter ,  Walter Gramlich

    发明人： Gerd Heilen ,  Klaus Halbritter ,  Walter Gramlich

    IPC分类号： B01J23/44 ,  B01J27/16 ,  C07C45/75 ,  C07C45/45

    CPC分类号： C07C45/75 ,  B01J23/44 ,  B01J27/16 ,  C07C2101/14

    摘要： A process for the preparation of .alpha.-methylsubstituted ketones by reacting the corresponding non-methylsubstituted ketones with formaldehyde under hydrogenating conditions. The reaction proceeds easily and with good yields if a catalyst containing metallic palladium deposited on a zirconium, hafnium, titanium or tin phosphate is used. The products are valuable intermediates for the preparation of dyes, crop protection agents or drugs.

    摘要翻译： 通过在氢化条件下使相应的非甲基取代的酮与甲醛反应来制备α-甲基取代的酮的方法。 如果使用沉积在锆，铪，钛或磷酸锡上的含有金属钯的催化剂，则反应容易进行并且产率良好。 该产品是制备染料，作物保护剂或药物的有价值的中间体。

    Preparation of 3-formyl-5,6-dihydro-2H-pyran
    5.
    发明授权
    Preparation of 3-formyl-5,6-dihydro-2H-pyran 失效
    3-甲酰基-5,6-二氢-2H-吡喃的制备

    公开(公告)号：US4532337A

    公开(公告)日：1985-07-30

    申请号：US584334

    申请日：1984-02-28

    申请人： Heinz Eckhardt ,  Klaus Halbritter ,  Norbert Goetz ,  Gerd Heilen

    发明人： Heinz Eckhardt ,  Klaus Halbritter ,  Norbert Goetz ,  Gerd Heilen

    IPC分类号： C07D309/26 ,  C07D309/00

    CPC分类号： C07D309/26

    摘要： 3-Formyl-5,6-dihydro-2H-pyran is prepared by conversion of acrolein in the presence of water, acids and halohydrocarbons of 1 to 6 carbon atoms and 1 to 6 halogen atoms as solvents at from 60.degree. to 150.degree. C. The 3-formyl-5,6-dihydro-2H-pyran obtained by the novel process is a valuable starting material for the preparation of dyes and crop protection agents.

    摘要翻译： 3-甲酰基-5,6-二氢-2H-吡喃是通过在水，酸和1至6个碳原子和1至6个卤素原子的卤代烃作为溶剂在60至150℃的存在下转化丙烯醛来制备的 通过新方法获得的3-甲酰基-5,6-二氢-2H-吡喃是制备染料和作物保护剂的有价值的起始原料。

    Preparation of alpha-substituted upsilon-butyrolactones
    6.
    发明授权
    Preparation of alpha-substituted upsilon-butyrolactones 失效
    制备α-取代的上升 - 丁内酯

    公开(公告)号：US4831166A

    公开(公告)日：1989-05-16

    申请号：US47131

    申请日：1987-05-08

    申请人： Heinz Eckhardt ,  Walter Gramlich ,  Walter Best ,  Klaus Halbritter

    发明人： Heinz Eckhardt ,  Walter Gramlich ,  Walter Best ,  Klaus Halbritter

    IPC分类号： B01J27/10 ,  B01J27/18 ,  B01J27/232 ,  B01J31/02 ,  C07B61/00 ,  C07D307/33 ,  C07D315/00

    CPC分类号： C07D307/33 ,  C07D315/00

    摘要： .gamma.-butyrolactones of the general formula I ##STR1## where R.sup.1 is hydrogen or alkyl of 1 to 4 carbon atoms which may be substituted by lower alkoxy or acyloxy and R.sup.2 is hydrogen or straight-chain or branched alkyl which is unsubstituted or substituted by a functional group or is aryl, are prepared by reacting an alkylene oxide of the general formula II ##STR2## with an acylacetate of the general formla III ##STR3## where R.sup.1 and R.sup.2 have the above meanings and R.sup.3 and R.sup.4 are each alkyl of 1 to 6 carbon atoms or aryl, and R.sup.4 may furthermore be hydrogen, in the presence of a catalyst at elevated temperatures, by a process in which the reaction is carried out in the presence of an alkali metal halide, of an ammonium halide, preferably a quaternary ammonium halide, of a phosphonium halide, of an alkali metal phosphate or of an alkali metal carbonate at from 20.degree. to 200.degree. C. and under from 1 to 50 bar.

    摘要翻译： 通式I（I）的γ-丁内酯，其中R 1是氢或可以被低级烷氧基或酰氧基取代的具有1至4个碳原子的烷基，R 2是氢或未被取代的直链或支链烷基， 被官能团取代或是芳基，通过使通式II（II）的烯化氧与一般形式III（III）的酰基乙酸酯反应制备，其中R 1和R 2具有上述含义， R 3和R 4各自为1至6个碳原子的烷基或芳基，并且R 4还可以在催化剂存在下在升高的温度下通过其中反应在碱金属卤化物 卤化铵，碱金属磷酸盐或碱金属碳酸盐的卤化铵，优选季铵卤化物，在20至200℃和1至50巴之间。

    Continuous industrial production of unsaturated aliphatic aldehydes in a tube bundle reactor
    9.
    发明授权
    Continuous industrial production of unsaturated aliphatic aldehydes in a tube bundle reactor 失效
    在管束反应器中连续工业生产不饱和脂族醛

    公开(公告)号：US6013843A

    公开(公告)日：2000-01-11

    申请号：US85836

    申请日：1998-05-28

    申请人： Werner Aquila ,  Hartwig Fuchs ,  Otto Worz ,  Wilhelm Ruppel ,  Klaus Halbritter

    发明人： Werner Aquila ,  Hartwig Fuchs ,  Otto Worz ,  Wilhelm Ruppel ,  Klaus Halbritter

    IPC分类号： B01J23/52 ,  B01J8/02 ,  B01J8/08 ,  C07B61/00 ,  C07C45/38 ,  C07C45/67 ,  C07C47/21 ,  C07C47/22 ,  C07C45/00

    CPC分类号： C07C45/38 ,  B01J8/0242 ,  B01J8/087 ,  C07C45/67 ,  B01J2208/00212

    摘要： A process for continuous industrial production of unsaturated aliphatic aldehydes having a boiling range from 95 to 136.degree. C. by oxidative dehydrogenation of the corresponding alcohols with an oxygen-comprising gas over a supported catalyst consisting of copper, silver and/or gold on an inert support in a tube bundle reactor, rapid cooling of the reaction gases and removal of the aldehydes from the resulting condensate with recycling of the unconverted alcohols comprisesa) vaporizing the alcohol,b) admixing the alcohol vapor with an oxygen-comprising gas,c) initially passing the resulting oxygen-comprising alcohol vapor at above the dew point of the alcohol but below the commencement temperature of the reaction through a layer of one of the abovementioned supported catalysts which is at least 0.5 cm in thickness and only thend) reacting the oxygen-comprising alcohol vapor at from 300 to 600.degree. C. in a sufficient number, for the desired capacity, of parallel reaction tubes surrounded by a fluidic heat transfer medium, packed with the supported catalyst and having an internal diameter D of from about 0.5 to 3 cm and a length of at least 5 cm, to form the corresponding aldehyde.

    摘要翻译： 通过相对应的醇与含氧气体在由铜，银和/或金组成的负载型催化剂上惰性惰性的连续工业生产不饱和脂族醛的方法，其沸程为95至136℃ 在管束反应器中的支撑，反应气体的快速冷却以及未转化的醇的再循环从所得冷凝物中除去醛包括a）蒸发醇，b）将醇蒸气与含氧气体混合，c） 首先将所得的含氧醇醇蒸气在醇的露点以上但低于反应开始温度的上述负载型催化剂层中的至少0.5cm厚度，然后d）使 含氧的醇蒸气在300-600℃下以足够的数量容纳所需的并联反应管 由流体传热介质引入，填充有负载的催化剂并且具有约0.5至3cm的内径D和至少5cm的长度以形成相应的醛。