Process for the preparation of a pyridone-2
    1.
    发明授权
    Process for the preparation of a pyridone-2 失效
    制备吡啶酮-2的方法

    公开(公告)号:US4599421A

    公开(公告)日:1986-07-08

    申请号:US601342

    申请日:1984-04-17

    CPC分类号: C07D213/08 C07D213/64

    摘要: Pyridone-2 compounds are prepared by reacting an oxoalkanecarboxylic acid having as general formula ##STR1## where R.sub.2 and R.sub.3 represent hydrogen or an alkyl group having 1-4 C atoms, or an ester of such an acid in the gas phase with an amine compound R.sub.1 NH.sub.2,where R.sub.1 represents hydrogen or an alkyl group with 1-4 C atoms, at a temperature of 250.degree.-450.degree. C. in the presence of a dehydrogenating catalyst.

    摘要翻译: 吡啶酮-2化合物通过使具有通式为“IMAGE”的氧代烷基羧酸(其中R 2和R 3表示氢或具有1-4个C原子的烷基)或这种酸的酯在气相中与胺化合物 R1NH2,其中R1表示氢或1-4C原子的烷基,在脱氢催化剂存在下,在250-450℃的温度下进行。

    Process for the preparation of a lactam
    2.
    发明授权
    Process for the preparation of a lactam 失效
    制备内酰胺的方法

    公开(公告)号:US4560760A

    公开(公告)日:1985-12-24

    申请号:US646049

    申请日:1984-08-31

    IPC分类号: C07D201/08

    CPC分类号: C07D201/08 Y02P20/52

    摘要: Disclosed is a process for preparing a lactam which consists essentially in the reductive amination in the gas phase of an oxoalkane carboxylic acid having the formula ##STR1## or an alkyl ester thereof, wherein R is an alkyl group having from 1 to 4 carbon atoms and n varies from 2 to 3, and wherein the reaction is carried out:A. in an atmosphere of hydrogen, andB. in the presence of a gas phase reactant selected from the group consisting of gaseous ammonia and a vaporized primary amine, andC. in the presence of a hydrogenation catalyst promoted with an alkali metal.The alkali metal particularly preferred as a promoter is sodium.

    摘要翻译: 公开了一种制备内酰胺的方法,该方法主要包括在具有下式的氧代烷烃羧酸或其烷基酯的气相中还原胺化,其中R是具有1至4个碳原子的烷基和 n在2至3之间变化,并且其中反应在氢气氛和氢气氛中进行:A.在选自气态氨和汽化伯胺的气相反应物存在下,和C 在用碱金属促进的氢化催化剂存在下进行。 特别优选的碱金属作为助催化剂是钠。

    Process for preparing pyrimidine
    3.
    发明授权
    Process for preparing pyrimidine 失效
    制备嘧啶的方法

    公开(公告)号:US4730043A

    公开(公告)日:1988-03-08

    申请号:US812812

    申请日:1985-12-23

    CPC分类号: C07D239/26

    摘要: Alkylpyrimidines are dealkylated to the corresponding pyrimidines by contacting with an oxidation catalyst containing one or more oxides of at least one of the elements of the group consisting of Bi, Mo and V in the presence of water and oxygen in the gas phase at a temperature of 300.degree.-450.degree. C.

    摘要翻译: 烷基嘧啶通过在气相中在水和氧的存在下与在含有一种或多种Bi,Mo和V的元素中的至少一种元素的一种或多种氧化物的氧化催化剂接触而脱苄基化至相应的嘧啶,温度为 300°-450℃

    Process for the preparation of pyridone-2 by demethylation
    5.
    发明授权
    Process for the preparation of pyridone-2 by demethylation 失效
    通过去甲基化制备吡啶酮-2的方法

    公开(公告)号:US4639525A

    公开(公告)日:1987-01-27

    申请号:US671308

    申请日:1984-11-14

    IPC分类号: C07D213/127 C07D213/64

    CPC分类号: C07D213/64

    摘要: Process for the preparation of 2-pyridone in the gas phase comprising contacting 6-methyl-2-pyridone with a metallic dealkylation catalyst in the presence of water at a temperature of 200.degree.-500.degree. C.

    摘要翻译: 在气相中制备2-吡啶酮的方法,包括在水存在下,在200-500℃的温度下使6-甲基-2-吡啶酮与金属脱烷基化催化剂接触。

    Process for preparing pyrimidine
    7.
    发明授权
    Process for preparing pyrimidine 失效
    制备嘧啶的方法

    公开(公告)号:US4719299A

    公开(公告)日:1988-01-12

    申请号:US785998

    申请日:1985-10-10

    IPC分类号: B01J23/58 C07D239/26

    CPC分类号: C07D239/26 B01J23/58

    摘要: Process for preparing pyrimidine by reacting in the gas phase 1,3-diaminopropane with a C.sub.1 reagent in the presence of an excess of methanol and/or carbon monoxide and of a metallic catalyst, wherein the reaction is carried out in the presence of a palladium catalyst promoted with an alkali metal and subsequently from the resulting reaction mixture pyrimidine is recovered.

    摘要翻译: 通过在气相1,3-二氨基丙烷与C1试剂在过量的甲醇和/或一氧化碳和金属催化剂存在下反应制备嘧啶的方法,其中反应在钯的存在下进行 用碱金属促进催化剂,随后从所得反应混合物中回收嘧啶。