Method for producing macrocyclic ketones by means of dieckmann codensation in the gas phase
    1.
    发明授权
    Method for producing macrocyclic ketones by means of dieckmann codensation in the gas phase 有权
    通过在气相中的羟丙基甲烷聚合法制备大环酮的方法

    公开(公告)号:US07247753B2

    公开(公告)日:2007-07-24

    申请号:US10519549

    申请日:2003-07-10

    IPC分类号: C07C45/67

    摘要: The invention relates to a method for producing macrocyclic ketones of general formula (I) by direct cyclisation of compounds of general formula (II) in the gas phase on a heterogeneous catalyst. In general formula (I), X represents a monounsaturated or polyunsaturated or saturated C10–C17 alkyl radical which can be optionally substituted by a C1–C6 alkyl radical, and in general formula (II), R1, R2 can respectively be the same or different and represent hydrogen or C1–C6 alkyl, and has the above-mentioned designation.

    摘要翻译: 本发明涉及通过在气相中在非均相催化剂上直接环化通式(II)的化合物来制备通式(I)的大环酮的方法。 在通式(I)中,X表示可以任选被C 1'烷基取代的单不饱和或多不饱和或饱和的C 1 -C 12烷基, 通式(II)中,R 1,R 2可以分别相同或不同,并且R 1,R 2,R 2, 表示氢或C 1 -C 6烷基,并具有上述名称。

    Method for producing macrocyclic ketones by means of dieckmann condensation in the gas phase
    2.
    发明申请
    Method for producing macrocyclic ketones by means of dieckmann condensation in the gas phase 有权
    通过在气相中的甲基丙酮缩合制备大环酮的方法

    公开(公告)号:US20050256341A1

    公开(公告)日:2005-11-17

    申请号:US10519549

    申请日:2003-07-10

    摘要: The invention relates to a method for producing macrocyclic ketones of general formula (I) by direct cyclisation of compounds of general formula (II) in the gas phase on a heterogeneous catalyst. In general formula (I), X represents a monounsaturated or polyunsaturated or saturated C10-C17 alkyl radical which can be optionally substituted by a C1-C6 alkyl radical, and in general formula (II), R1, R2 can respectively be the same or different and represent hydrogen or C1-C6 alkyl, and has the above-mentioned designation.

    摘要翻译: 本发明涉及通过在气相中在非均相催化剂上直接环化通式(II)的化合物来制备通式(I)的大环酮的方法。 在通式(I)中,X表示可以任选被C 1'烷基取代的单不饱和或多不饱和或饱和的C 1 -C 12烷基, 通式(II)中,R 1,R 2可以分别相同或不同,并且R 1,R 2,R 2, 表示氢或C 1 -C 6烷基,并具有上述名称。

    Method for producing 3-methyl 2-butenal acetals
    3.
    发明授权
    Method for producing 3-methyl 2-butenal acetals 失效
    3-甲基2-丁烯醛缩醛的制备方法

    公开(公告)号:US06313322B1

    公开(公告)日:2001-11-06

    申请号:US09463847

    申请日:2000-02-01

    IPC分类号: C07C43303

    CPC分类号: C07C41/56 C07C43/303

    摘要: A process for preparing acetals of the formula I where a) the Rs are, independently of one another, a C1-C20-alkyl or C3-C20-alkenyl radical, or b) the two R radicals together form the members of an unsubstituted or C1-C10-alkyl-substituted 5- to 7-membered cyclic acetal, by reacting 3-methyl-2-butenal in the presence of sulfamic acid, of a N-(C1-C8-alkyl)sulfamic acid or of a N,N-di(C1-C8-alkyl)sulfamic acid as catalyst with: an alcohol of the formula R—OH (IIa), or an orthoester of the formula HC—(OR)3 (III) or a mixture of an alcohol of the formula (IIa) and an orthoester of the formula (III), or an alcohol of the formula HO—(CH2)m—OH (IIb), where m is a number from 2 to 4, and (CH2)m group in the alcohol IIb may be substituted by a C1-C10-alkyl group.

    摘要翻译: 制备式I的缩醛的方法,其中R a彼此独立地为C 1 -C 20烷基或C 3 -C 20 - 烯基,orb),两个R基团一起形成未取代的或C 1 -C 10的成员 - 烷基取代的5-至7-元环状缩醛,在氨基磺酸存在下,使3-甲基-2-丁烯醛,N-(C 1 -C 8 - 烷基)氨基磺酸或N,N-二 (II)的醇或式(II)的醇的混合物或式(IIa)的醇的混合物, 和式(III)的原酸酯,式HO-(CH 2)m -OH(IIb)的醇,其中m为2至4的数,醇IIb中的(CH 2)m基团可以被取代 通过C 1 -C 10 - 烷基。

    Aqueous phase process for preparing N-substituted imidazoles
    4.
    发明授权
    Aqueous phase process for preparing N-substituted imidazoles 失效
    制备N-取代咪唑的水相方法

    公开(公告)号:US5877326A

    公开(公告)日:1999-03-02

    申请号:US914187

    申请日:1997-08-19

    摘要: A process for preparing substituted imidazoles of the formula I ##STR1## R.sup.1, R.sup.2 and R.sup.3 are identical or different and are each hydrogen, halogen, NO.sub.2, CN or a C.sub.1 -C.sub.20 -hydrocarbon radical which is unsubstituted or substituted by one or more halogens or R.sup.1 and R.sup.2 together are members of a 3- to 20-membered hydrocarbon ring which is unsubstituted or substituted by one or more halogens and/or C.sub.1 -C.sub.8 -alkyl groups and which may contain 1, 2 or 3 heteroatoms from the group consisting of nitrogen, oxygen and sulfur, andR.sup.4 is a C.sub.1 -C.sub.20 -hydrocarbon radical which is unsubstituted or substituted by one or more halogens,comprises using an aqueous phase of the imidazoles of the formula II ##STR2## where R.sup.1, R.sup.2 and R.sup.3 are as defined above with compounds of the formula IIIR.sup.4 --O--R.sup.5 IIIwhereR.sup.4 is as defined above andR.sup.5 is hydrogen or R.sup.4, it being possible in the latter case for the two R.sup.4 substituents to be identical or different,and reacting it at from 200.degree. to 550.degree. C. in the presence of a catalyst comprising oxides and/or phosphates of one or more metals of the 2nd, 3rd and 4th main group and the 4th subgroup of the Periodic Table in the presence or absence of phosphoric acid and/or phosphoric esters.

    摘要翻译: 制备式I的取代咪唑的方法R1,R2和R3相同或不同,各自为氢,卤素,NO2,CN或C1-C20-烃基,其未被取代或被一个或多个 卤素或R 1和R 2一起是3至20元烃环的成员,其未被取代或被一个或多个卤素和/或C 1 -C 8烷基取代,并且可以含有1,2或3个来自该基团的杂原子 由氮,氧和硫组成,R4是未被取代或被一个或多个卤素取代的C 1 -C 20烃基,包括使用式II的咪唑的水相,其中R 1,R 2和 R 3如上所定义,与式III的R4-O-R5III化合物,其中R 4如上定义,R 5是氢或R 4,在后一种情况下,两个R 4取代基可以相同或不同, 在约200℃〜550℃下, 在磷酸和/或磷酸酯存在或不存在的条件下,包含第2,第3和第4主族和第4族的周期表中的一种或多种金属的氧化物和/或磷酸盐。