Preparation of phenylacetaldehydes
    3.
    发明授权
    Preparation of phenylacetaldehydes 失效
    苯乙醛的制备

    公开(公告)号:US4990684A

    公开(公告)日:1991-02-05

    申请号:US378984

    申请日:1989-07-12

    摘要: Phenylacetaldehydes of the general formula I ##STR1## where each of R.sup.1 to R.sup.5 is independently of the others hydrogen, halogen, unsubstituted or halogen-substituted alkyl, alkenyl, alkoxyl, alkylthio or cycloalkyl, are prepared by converting glycidic esters of the general formula II ##STR2## where each of R.sup.1 to R.sup.5 is as defined above and R.sup.6 is tertbutyl or i-propyl, in the presence of zeolites and/or phosphates and/or phosphoric or boric acid on a carrier material and/or acidic metal oxides as catalysts.

    摘要翻译: 通式Ⅰ(I)的苯基乙醛通过将式(I)的缩水甘油酯转化成其中R1至R5各自独立地为氢,卤素,未取代或卤素取代的烷基,烯基,烷氧基,烷硫基或环烷基, 在载体材料上的沸石和/或磷酸盐和/或磷酸或硼酸存在下,通式II(II)其中R 1至R 5各自如上所定义,R 6为叔丁基或异丙基,和/ 或酸性金属氧化物作为催化剂。

    Preparation of vinyl ethers
    4.
    发明授权
    Preparation of vinyl ethers 失效
    乙烯的制备

    公开(公告)号:US5130435A

    公开(公告)日:1992-07-14

    申请号:US565180

    申请日:1990-08-09

    IPC分类号: C07C41/28

    CPC分类号: C07C41/28 Y02P20/582

    摘要: Vinyl ethers of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are identical to or different from one another, each being hydrogen, straight-chain or branched alkyl or alkenyl of up to 12 carbon atoms, cycloalkyl or cycloalkylene of from 5 to 8 carbon atoms, aryl, alkylaryl, alkenylaryl, aralkyl and aralkenyl of from 6 to 16 carbon atoms, halogen-substituted aryl or heterocyclyl, and in addition the radicals R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3, together with the carbon atom to which they are bonded, can form a cycloalkane, cycloalkene or a heterocycle, and R.sup.4 is alkyl, alkylaryl or aralkyl, are prepared by eliminating an alcohol from an acetal/ketal of the formula ##STR2## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each as defined above, in the presence of a phosphate of zeolite structure and/or a precipitated phosphate of the elements B, Zr, Ce or Fe and/or phosphoric acid or boric acid on carrier material and/or acidic undoped metal oxide as catalyst, the reaction being preferably carried out in the gas phase.

    摘要翻译: 式中,R 1,R 2和R 3彼此相同或不同的乙烯基醚,各自为氢,直至12个碳原子的直链或支链烷基或烯基,5至8的环烷基或亚环烷基 碳原子,芳基,烷基芳基,烯基芳基,芳烷基和具有6至16个碳原子的芳烯基,卤素取代的芳基或杂环基,此外基团R 1和R 2或R 1和R 3与它们所键合的碳原子一起 可以形成环烷烃,环烯烃或杂环,并且R 4是烷基,烷基芳基或芳烷基,通过从式(I)的缩醛/缩酮中除去醇来制备,其中R 1,R 2,R 3和R 4各自如上所定义 在载体材料和/或酸性未掺杂的金属氧化物作为催化剂的沸石结构的磷酸盐和/或元素B,Zr,Ce或Fe和/或磷酸或硼酸的沉淀磷酸盐存在下,反应为 优选在气相中进行。

    Preparation of vinyl ethers
    5.
    发明授权
    Preparation of vinyl ethers 失效
    乙烯基醚的制备

    公开(公告)号:US4891451A

    公开(公告)日:1990-01-02

    申请号:US213589

    申请日:1988-06-30

    IPC分类号: C07C41/28

    摘要: Vinyl ethers of the formula (I) ##STR1## where R.sup.1 to R.sup.3 are identical or different and are each hydrogen, a straight-chain or branched alkyl or alkenyl radical of not more than 12 carbon atoms, halogen-substituted alkyl, a cycloalkyl or cycloalkenyl radical of 5 to 8 carbon atoms, an aryl, alkylaryl, alkenylaryl, aralkyl or aralkenyl radical of 6 to 16 carbon atoms, halogen-substituted aryl or a heterocyclic radical and furthermore R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3, together with the carbon atom to which they are bonded, may form a cycloalkane, cycloalkene or heterocyclic structure, and R.sup.4 is alkyl, alkylaryl or aralkyl, are prepared by a process in which an alcohol is eliminated from an acetal or ketal of the formula (II) ##STR2## where R.sup.1 to R.sup.4 have the above meanings, in the presence of borosilicate and/or iron silicate zeolites as catalysts.

    摘要翻译: 式(I)的乙烯基醚其中R 1至R 3相同或不同并且各自为氢,不超过12个碳原子的直链或支链烷基或烯基,卤素取代的烷基, 5至8个碳原子的环烷基或环烯基,6至16个碳原子的芳基,烷基芳基,烯基芳基,芳烷基或芳烯基,卤素取代的芳基或杂环基,此外R1和R2或R1和R3连同 其键合的碳原子可以通过其中从式(II)的缩醛或缩酮中除去醇的方法制备环烷烃,环烯烃或杂环结构,并且R 4是烷基,烷基芳基或芳烷基, 在有硼硅酸盐和/或铁硅酸盐沸石作为催化剂的情况下,R1至R4具有上述含义的图像(II)。

    Preparation of pyridines
    7.
    发明授权
    Preparation of pyridines 失效
    吡啶的制备

    公开(公告)号:US5081247A

    公开(公告)日:1992-01-14

    申请号:US449401

    申请日:1989-12-19

    摘要: Pyridines of the formula ##STR1## where the individual radicals R.sup.1 may be identical or different and are each hydrogen or an aliphatic radical are prepared by reactinga) a 2-alkoxy-2,3-dihydro-4H-pyran of the formula ##STR2## or b) a glutaraldehyde of the formula ##STR3## where R.sup.1 has the abovementioned meansings and R.sup.2 is an aliphatic radical, with ammonia in the presence of an acidic, solid catalyst.

    摘要翻译: 其中各个基团R 1可以相同或不同并且各自为氢或脂族基团的式(Ⅺ)的吡啶通过使a)2-烷氧基-2,3-二氢-4H-吡喃与 式(II)或b)在酸性固体催化剂的存在下,氨与式(III)的戊二醛,其中R 1具有上述含义并且R 2是脂族基团。

    Preparation of .alpha.-ketocarboxylic esters
    9.
    发明授权
    Preparation of .alpha.-ketocarboxylic esters 失效
    α-酮羧酸酯的制备

    公开(公告)号:US4968831A

    公开(公告)日:1990-11-06

    申请号:US323861

    申请日:1989-03-15

    CPC分类号: C07C67/313 C07C69/738

    摘要: .alpha.-Ketocarboxylic esters ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are identical to or different from one another and are each hydrogen or straight-chain or branched alkyl, alkenyl, hydroxyl, alkoxy cycloalkyl or halogen and R.sup.6 is unbranched lower alkyl, are prepared by reacting glycidic esters of the formula ##STR2## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each as defined above, in the presence of zeolites or phosphates and/or phosphoric acid or boric acid on a carrier material and/or acidic metal oxides as catalysts and are used for preparing phenylacetic esters.

    摘要翻译: α-酮羧酸酯,其中R 1,R 2,R 3,R 4和R 5彼此相同或不同,各自为氢或直链或支链烷基,烯基,羟基,烷氧基环烷基或卤素,R6为未分支的 烷基,通过在载体上的沸石或磷酸盐和/或磷酸或硼酸的存在下使式(I)的缩水甘油酯反应来制备,其中R 1,R 2,R 3,R 4,R 5和R 6各自如上所定义 材料和/或酸性金属氧化物作为催化剂,并用于制备苯乙酸酯。

    Preparation of substituted pyridines
    10.
    发明授权
    Preparation of substituted pyridines 失效
    取代吡啶的制备

    公开(公告)号:US4960894A

    公开(公告)日:1990-10-02

    申请号:US278362

    申请日:1988-12-01

    摘要: Preparation of substituted pyridines of the general formula (I) ##STR1## by the reaction of acrolein and ammonia with alkanals or ketones of the general formula (II), the acetals of the alkanals,R.sup.2 --CO--CH.sub.2 --CO--R.sup.1 IIwhere R.sup.1 is hydrogen or an alkyl of from 1 to 12 carbon atoms, cycloalkyl, aryl, or arylalkyl and R.sup.2 is an alkyl or alkoxy radical; the reaction is carried out in the presence of zeolites.

    摘要翻译: 通过丙烯醛和氨与通式(II)的链烷或酮的反应制备通式(I)的取代吡啶,其中链烷醛,R2-CO-CH2-CO- R1Ⅱ其中R1是氢或1至12个碳原子的烷基,环烷基,芳基或芳基烷基,R2是烷基或烷氧基; 反应在沸石存在下进行。