Process for Preparing 1,1,4,4-Tetraalkoxybut-2-Ene Derivatives
    1.
    发明申请
    Process for Preparing 1,1,4,4-Tetraalkoxybut-2-Ene Derivatives 审中-公开
    制备1,1,4,4-四烷氧基-2-烯衍生物的方法

    公开(公告)号:US20080228009A1

    公开(公告)日:2008-09-18

    申请号:US11996547

    申请日:2006-07-31

    IPC分类号: C07C41/01

    CPC分类号: C25B3/02

    摘要: Process for preparing 1,1,4,4-tetraalkoxybut-2-ene derivatives of the general formula (I), where the radicals R1 and R2 are each, independently of one another, hydrogen, C1-C6-alkyl, C6-C12-aryl, such as phenyl, or C5-C12-cycloalkyl or R1 and R2 together with the double bond to which they are bound form a C6-C12-aryl radical, such as phenyl, a phenyl radical substituted by one or more C1-C6-alkyl groups, halogen atoms or alkoxy groups or a monounsaturated or polyunsaturated C5-C12-cycloalkyl radical, R3, R4 are each, independently of one another, hydrogen, methyl, trifluoromethyl or nitrile, which comprises electrochemically oxidizing 1,4-dialkoxy-1,3-butadiene of the formula II where the radicals R1, R3 and R4 have the same meanings as in the formula I, in the presence of a C1-C6-alkyl alcohol.

    摘要翻译: 制备通式(I)的1,1,4,4-四烷氧基丁-2-烯衍生物的方法,其中基团R 1和R 2各自为 氢,C 1 -C 6 - 烷基,C 6 -C 12 - 芳基,C 1 -C 6烷基,C 1 -C 6 - ,例如苯基或C 5 -C 12 - 环烷基或R 1和R 2,以及R 2和/或 与它们结合的双键形成C 6 -C 12 - 芳基,例如苯基,被一个或多个C 1〜 C 1 -C 6 - 烷基,卤原子或烷氧基或单不饱和或多不饱和C 5 -C 12 - 环烷基, R 3,R 4各自彼此独立地为氢,甲基,三氟甲基或腈,其包括电化学氧化1,4-二烷氧基-1,3-丁二烯 其中基团R 1,R 3和R 4的式II具有与式I中相同的含义,在t 存在C 1 -C 6 - 烷基醇。

    Method For Producing Alkoxylated 2,5-Dihydrofuran But-2-Ene Derivatives Or Tetra-1,1,4,4-Alkoxylated But-2-Ene Derivatives
    2.
    发明申请
    Method For Producing Alkoxylated 2,5-Dihydrofuran But-2-Ene Derivatives Or Tetra-1,1,4,4-Alkoxylated But-2-Ene Derivatives 审中-公开
    生产烷氧基化2,5-二氢呋喃丁-2-烯衍生物或四 - 1,1,4,4-烷氧基化丁-2-烯衍生物的方法

    公开(公告)号:US20080110763A1

    公开(公告)日:2008-05-15

    申请号:US11908506

    申请日:2006-03-23

    IPC分类号: C25D3/62 C07D307/02

    摘要: A process for the preparation of 2,5-dihydrofuran derivatives substituted in the 3- or 4-position, which in the 2- or in the 5-position or at both positions each carry a C1- to C6-alkoxy radical (DHF-alkoxy derivatives 1), or 1,1,4,4-tetraalkoxy-but-2-ene derivatives substituted in the 3- or 4-position, from 2-butene-1 ,4-diol derivatives of the general formula (I) in which the radicals R1 and R2 independently of one another are hydrogen, C1- to C6-alkyl, C6- to C12-aryl or C5- to C12-cycloalkylene orR1 and R2, together with the double bond to which they are bonded, form a C6- to C12-aryl radical or a mono- or polyunsaturated C5- to C12-cycloalkyl radical,orfrom their mixture with 2,5-dihydrofuran derivatives substituted in the 3- position or 4-position, which in the 2- or in the 5-position carry a C1- to C6-alkoxy radical, by electro-chemical oxidation in the presence of a C1- to C6-monoalkyl alcohol.

    摘要翻译: 制备在3-或4-位取代的2,5-二氢呋喃衍生物的方法,其中2-或5-位或两个位置各自携带C 1 - 至C 6 - 烷氧基(DHF-烷氧基衍生物1)或在3-或4-位取代的1,1,4,4-四烷氧基 - 丁-2-烯衍生物,2 其中基团R 1和R 2彼此独立的通式(I)的1-丁烯-1,4-二醇衍生物是氢,C 1 -C 6烷基, 1〜C 6 - 烷基,C 6 - 至C 12 - 芳基或C 5〜 > - > C 12 - 亚环烷基或R 1和R 2与它们所键合的双键一起形成C < C 6 -C 12 - C 12 - 芳基或单不饱和C 5〜C 12 - 环烷基 ,或它们与3-或4-位取代的2,5-二氢呋喃衍生物的混合物,其在2-或5-位上携带C 1 H 通过在C 1 -C 6 - C 6 - 单烷基醇存在下的电化学氧化反应生成C 6〜C 6 - 烷氧基 。

    Process for preparing 2-alkyne 1-acetals
    5.
    发明申请
    Process for preparing 2-alkyne 1-acetals 审中-公开
    制备2-炔-1-缩醛的方法

    公开(公告)号:US20060016695A1

    公开(公告)日:2006-01-26

    申请号:US11186100

    申请日:2005-07-21

    IPC分类号: C25B3/00

    CPC分类号: C25B3/02

    摘要: Process for preparing 2-alkyne 1-acetals of the general formula I, where the radicals have the following meanings: R1 is hydrogen, C1-C20-alkyl, C2-C20-alkenyl, C2-C20-alkynyl, C3-C12-cycloalkyl, C4-C20-cycloalkylalkyl, C4-C10-aryl, with these radicals optionally being able to be substituted by hydroxy, halogen, C1-C6-alkoxy, (C1-C6-alkoxy)carbonyl, carboxyl or nitrile groups, R2 is C1-C6-alkyl or a radical of the general formula II where R1 is as defined above, R3 has the same meaning as the radical R2, by electrochemically oxidizing a compound of the general formula III where the radical R1 has the same meaning as in the general formula I, in the presence of C1-C6-alkyl alcohols (alcohol A) or as such.

    摘要翻译: 制备通式I的2-炔炔-1-缩醛的方法,其中基团具有以下含义:R 1是氢,C 1 -C 20 C 2 -C 20烷基,C 2 -C 20 - 烯基,C 2 -C 20 - 炔基 C 3 -C 12 - 环烷基,C 4 -C 20 - 环烷基烷基,C 4 C 1 -C 10 - 芳基,这些基团任选地可以被羟基,卤素,C 1 -C 6 - - 烷氧基,(C 1 -C 6 - 烷氧基)羰基,羧基或腈基,R 2是C 1 - C 1 -C 6 - 烷基或通式II的基团,其中R 1如上所定义,R 3和R 3具有相同的含义 作为基团R 2,通过电化学氧化通式III化合物,其中基团R 1具有与通式I中相同的含义,在 C 1 -C 6 - 烷基醇(醇A)或这样。

    Process for preparing M- or P-substituted phenylalkanols by alkylation
    6.
    发明授权
    Process for preparing M- or P-substituted phenylalkanols by alkylation 有权
    通过烷基化制备M-或P-取代的苯基链烷醇的方法

    公开(公告)号:US08692025B2

    公开(公告)日:2014-04-08

    申请号:US13503515

    申请日:2010-10-14

    IPC分类号: C07C45/29 C07C29/32

    摘要: The invention relates to a process for the preparation of m- or p-substituted phenylalkanols of the formula (I) in which R1 is bonded to the phenyl ring in the m- or p-position and is C1-C5-alkyl, and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein an unsubstituted phenylalkanol of the formula (II) in which R2, R3, R4 and R5 have the meanings given under formula (I) is alkylated together with a C1-C5-alkyl halide of the formula (III) R1-Hal  (III), in which R1 has the meaning given under formula (I) and Hal is halogen, in the presence of a Friedel-Crafts catalyst to give an m- or p-alkyl-substituted phenylalkanol of the formula (I), then the reaction mixture is worked-up and the desired m- or p-alkyl-substituted phenylalkanol of the formula (I) is separated off, the other formed by-products are returned to the reaction mixture and these are isomerized in the presence of a Friedel-Crafts catalyst to give the desired m- or p-alkyl-substituted phenylalkanol. From the m- or p-alkyl-substituted phenylalkanols of the formula (I), it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which play an interesting role as fragrances and aroma chemicals.

    摘要翻译: 本发明涉及一种制备式(I)的间 - 或对 - 取代的苯烷醇的方法,其中R 1与m-或p-位上的苯环键合并且是C1-C5-烷基,R2 R 3,R 4和R 5彼此独立地为氢或甲基,其中R 2,R 3,R 4和R 5具有式(I)所示含义的式(II)的未取代的苯基烷醇与 其中R 1具有式(I)所示含义,Hal为卤素的式(III)R1-Hal(Ⅲ)的C1-C5烷基卤化物,在Friedel-Crafts催化剂存在下,得到m- 或式(I)的对烷基取代的苯基链烷醇,然后将反应混合物处理并分离所需的式(I)的间 - 或对 - 烷基取代的苯基烷醇,另一个形成的副产物 返回到反应混合物中,并将它们在Friedel-Crafts催化剂存在下异构化,得到所需的间 - 或对 - 烷基取代的苯基 kanol 从式(I)的间 - 或对 - 烷基取代的苯烷醇,可以通过氧化或脱氢形成作为有价值的产物,相应的醛作为香料和香气化学品起着重要的作用。

    Method for producing 2-substituted tetrahydropyranols
    8.
    发明授权
    Method for producing 2-substituted tetrahydropyranols 有权
    2-取代四氢吡喃醇的制备方法

    公开(公告)号:US08618315B2

    公开(公告)日:2013-12-31

    申请号:US13321417

    申请日:2010-05-11

    IPC分类号: C07D309/10

    CPC分类号: C07D309/12

    摘要: The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyranols by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding aldehydes in the presence of a strongly acidic cation exchanger. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with isovaleraldehyde.

    摘要翻译: 本发明涉及通过使3-甲基丁-3-烯-1-醇(异戊二烯)与相应的醛在强酸性阳离子交换剂存在下反应制备2-取代的4-羟基-4-甲基四氢吡喃醇的方法 。 具体地说,本发明涉及通过异戊二烯与异戊醛反应制备2-异丁基-4-羟基-4-甲基四氢吡喃的相应方法。

    Electrochemical preparation of sterically hindered amines
    10.
    发明授权
    Electrochemical preparation of sterically hindered amines 有权
    空间位阻胺的电化学制备

    公开(公告)号:US07863486B2

    公开(公告)日:2011-01-04

    申请号:US12306616

    申请日:2007-06-27

    IPC分类号: C07C209/30 C25B3/04

    摘要: The present invention relates to a process for preparing an amine, which comprises the step cathodic reduction of a corresponding oxime derivative of the general formula (I) where R is C1-6-alkyl or C2-6-alkenyl which is optionally substituted by one or more substituents selected independently from the group consisting of phenyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; R1 is H; C1-6-alkyl or C(O)—C1-6-alkyl and A is a 5-, 6- or 7-membered hydrocarbon ring which is saturated or has a double bond and in which at least one CH2 group may, if appropriate, be replaced by —O—, —S— —NH—, —N═ or —N(C1-6-alkyl)- and which may optionally be substituted by one or more further substituents selected independently from the group consisting of phenyl, C1-6-alkyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; wherein, based on the ring carbon bearing the substituent R, the oxime derivative has an excess of the R or S form of at least 10%.

    摘要翻译: 本发明涉及一种制备胺的方法,其包括通式(I)的相应肟衍生物的步骤阴极还原,其中R是C 1-6 - 烷基或任选被一个取代基取代的C 2-6 - 烯基 或更多取代基独立地选自苯基,O-C 1-6 - 烷基,NH-C 1-6 - 烷基,N(C 1-6 - 烷基)2,OH和NH 2; R1是H; C 1-6 - 烷基或C(O)-C 1-6 - 烷基,A是饱和或具有双键并且其中至少一个CH 2基团的5-,6-或7-元烃环,如果 适当地被-O - , - S - NH - , - N =或-N(C 1-6 - 烷基)取代,并且其可以任选地被一个或多个另外的取代基取代,所述取代基独立地选自苯基 ,C 1-6 - 烷基,O-C 1-6 - 烷基,NH-C 1-6 - 烷基,N(C 1-6 - 烷基)2,OH和NH 2; 其中,基于带有取代基R的环碳,肟衍生物具有至少10%的R或S形式的过量。