Process for the preparation of .delta.-ethylenic carbonyl compounds
    2.
    发明授权
    Process for the preparation of .delta.-ethylenic carbonyl compounds 失效
    制备δ-亚乙基羰基化合物的方法

    公开(公告)号:US4510330A

    公开(公告)日:1985-04-09

    申请号:US390700

    申请日:1982-06-21

    CPC分类号: C07C45/512

    摘要: Process for the preparation of .delta.-ethylenic carbonyl compounds of the formula: ##STR1## by the oxy-Cope rearrangement of a diethylenic alcohol of the formula: ##STR2## in which the transformation is carried out in the presence of a catalytic amount of a divalent palladium compound.In the depicted formulae R.sub.1, R.sub.4 and R.sub.6 each represent a hydrogen atom or a hydrocarbon radical, R.sub.2 represents a hydrogen atom and R.sub.3 and R.sub.5 each represent a hydrocarbon radical, or R.sub.3 and R.sub.4 together represent an alkylene radical (--CH.sub.2 --).sub.n (wherein n is an integer from 3 to 20 inclusive) in which one or more carbon atoms can optionally carry as substituent(s) one or more alkyl radicals containing 1 to 4 carbon atoms.The carbonyl products are useful as starting materials for the preparation of compounds intended for use in pharmacy, in agriculture or perfumery.

    摘要翻译: 通过下式的二烯醇的氧基 - Cope重排制备下式的δ-亚乙基羰基化合物的方法:< IMAGE>其中转化在催化量的 二价钯化合物。 在所示的式中,R 1和R 4各自表示氢原子或烃基,R 2表示氢原子,R 3和R 5各自表示烃基,或者R 3和R 4一起表示亚烷基(-CH 2 - )n( 其中n为3〜20的整数,其中一个或多个碳原子可以任选地携带一个或多个含有1至4个碳原子的烷基作为取代基。 羰基产物可用作制备用于制药,农业或香料中的化合物的起始原料。

    Process for the preparation of 8-ethylenic carbonyl compounds
    3.
    发明授权
    Process for the preparation of 8-ethylenic carbonyl compounds 失效
    8-乙烯基羰基化合物的制备方法

    公开(公告)号:US4421934A

    公开(公告)日:1983-12-20

    申请号:US354145

    申请日:1982-03-05

    IPC分类号: C07C45/51

    CPC分类号: C07C45/512

    摘要: Process for the preparation of .delta.-ethylenic carbonyl compounds of the formula (I) by the oxy-Cope rearrangement of a diethylenic alcohol of the formula (II), in the presence of a mercuric salt: in formulae (I) and (II), R.sub.1, R.sub.2, R.sub.4, R.sub.5 and R.sub.6, which are identical or different, represent a hydrogen atom or an acyclic hydrocarbon radical and R.sub.3 represents an acyclic hydrocarbon radical, it being understood that R.sub.1 and R.sub.3 can together form a trimethylene radical, or alternatively that R.sub.3 and R.sub.4 can together form an alkylene radical containing 3 to 20 carbon atoms. ##STR1##

    摘要翻译: 在式(I)和(II)的存在下通过式(II)的二烯醇的氧 - Cope重排制备式(I)的δ-亚乙基羰基化合物的方法: R 1,R 2,R 4,R 5和R 6相同或不同,表示氢原子或无环烃基,R 3表示无环烃基,应理解R 1和R 3可以一起形成三亚甲基,或者 R3和R4可以一起形成含有3至20个碳原子的亚烷基。

    Process for the preparation of aromatic acid
    4.
    发明授权
    Process for the preparation of aromatic acid 失效
    芳香酸的制备方法

    公开(公告)号:US4990657A

    公开(公告)日:1991-02-05

    申请号:US355852

    申请日:1989-05-19

    摘要: A process for the preparation of an aromatic acid comprising the step of combining an aromatic halide having at least one iodine or bromine substituent with:a. a water-immiscible organic solvent,b. a palladium-based catalyst,c. a palladium-complexing agent,d. a tertiary nitrogen-containing organic base,e. water andf. carbon monoxide.The process is performed in a two-phase liquid medium and in the substantial absence of a phase transfer agent.

    摘要翻译: 一种制备芳族酸的方法,包括将具有至少一个碘或溴取代基的芳族卤化物与以下物质组合的步骤:a。 与水不混溶的有机溶剂,b。 钯基催化剂,c。 钯络合剂d。 三级含氮有机碱, 水和f。 一氧化碳。 该方法在两相液体介质中进行并且基本上不存在相转移剂。

    Preparation of aromatic aldehydes
    6.
    发明授权
    Preparation of aromatic aldehydes 失效
    芳香醛的制备

    公开(公告)号:US4942240A

    公开(公告)日:1990-07-17

    申请号:US43363

    申请日:1987-04-28

    摘要: Aromatic aldehydes are more rapidly produced by reacting hydrogen/carbon monoxide admixture with an aromatic halide in the presence of a noble metal-based catalyst, a tertiary nitrogenous base and, if necessary, a noble metal complexing agent, e.g., a phosphine or phosphite, wherein the concentration of said tertiary nitrogenous base, expressed in moles per liter of reaction mixture, is maintained at a value of at least two moles/liter over the course of the reaction.

    摘要翻译: 在贵金属基催化剂,叔氮碱和必要时,贵金属络合剂如磷化氢或亚磷酸盐存在下,使氢/一氧化碳混合物与芳族卤化物反应,可以更快地制备芳族醛, 其中所述叔氮碱的浓度以每升反应混合物的摩尔数表示,在反应过程中保持在至少两摩尔/升的值。