Production of high molecular weight .alpha.,.beta.-unsaturated aldehydes
    1.
    发明授权
    Production of high molecular weight .alpha.,.beta.-unsaturated aldehydes 失效
    生产高分子量{60,{62-不饱和醛

    公开(公告)号:US4021411A

    公开(公告)日:1977-05-03

    申请号:US583637

    申请日:1975-06-04

    IPC分类号: C07C45/70 C07C45/71 C07C47/20

    CPC分类号: C07C45/71 C07C45/70

    摘要: A process for the production of high molecular weight .alpha.,.beta.-unsaturated aldehydes by alkylation of the .gamma.-carbon atom of a lower molecular weight .alpha.,.beta.-unsaturated aldehyde with a substituted allyl alcohol which has a chain branching in the 4-position carbon atom or a phenyl radical in the 4-position or of a corresponding allyl alcohol carboxylic ester at elevated temperature in the liquid phase.The products are valuable intermediates for the production of natural substances and odorants.

    摘要翻译: 通过用较低分子量的α,β-不饱和醛的γ-碳原子烷基化制备高分子量α,β-不饱和醛的方法,该取代的烯丙醇在4-位碳上具有支链分支 原子或4-位的苯基或相应的烯丙基醇羧酸酯在液相中升高的温度。

    Manufacture of unsaturated ketones
    3.
    发明授权
    Manufacture of unsaturated ketones 失效
    不饱和酮的制造

    公开(公告)号:US3932462A

    公开(公告)日:1976-01-13

    申请号:US415414

    申请日:1973-11-13

    摘要: Manufacture of high molecular weight unsaturated ketones by reacting allyl alcohols with 1-substituted butadiene-1-alkyl ethers or with 1-substituted butadiene-1-alkyl esters or with substances capable of forming said compounds under the conditions of the reaction, in the presence of acid catalysts at elevated temperatures and in the liquid phase. The resulting unsaturated ketones are precursors or intermediates in the manufacture of a variety of natural dyes such as zeaxanthin, rhodoxanthin and xanthophyll or of odorants such as damascones and damascenones.

    摘要翻译: 通过使烯丙醇与1-取代的丁二烯-1-烷基醚或与1-取代的丁二烯-1-烷基酯或能够在反应条件下形成所述化合物的物质在存在下反应制备高分子量不饱和酮 的酸催化剂在升高的温度和液相中。 所得的不饱和酮是制备各种天然染料如玉米黄质,红萝黄素和叶黄素或气味剂如大蠊和大马士革的前体或中间体。

    Production of high molecular weight .alpha.,.beta.-unsaturated aldehydes
    4.
    发明授权
    Production of high molecular weight .alpha.,.beta.-unsaturated aldehydes 失效
    生产高分子量{60,{62-不饱和醛

    公开(公告)号:US4058536A

    公开(公告)日:1977-11-15

    申请号:US662346

    申请日:1976-03-01

    摘要: A process for the production of high molecular weight .alpha.,.beta.-unsaturated aldehydes by alkylation of the .gamma.-carbon atom of a lower molecular weight .alpha.,.beta.-unsaturated aldehyde with a substituted allyl alcohol which has a chain branching in the 3-position carbon atom or a phenyl radical in the 3-position or of a corresponding allyl alcohol carboxylic ester at elevated temperature in the liquid phase.The products are valuable intermediates for the production of natural substances and odorants.

    摘要翻译: 通过用较低分子量的α,β-不饱和醛的γ-碳原子烷基化制备高分子量α,β-不饱和醛的方法,该取代的烯丙醇在3-位碳上具有支链分支 原子或3-位上的苯基或相应的烯丙醇羧酸酯在液相中升高的温度下进行。

    Preparation of 3-(2-acyloxyethyl)-dihydro-2(3H)furanones
    7.
    发明授权
    Preparation of 3-(2-acyloxyethyl)-dihydro-2(3H)furanones 失效
    3-(2-酰氧基乙基) - 二氢-2(3H)呋喃酮的制备

    公开(公告)号:US5466831A

    公开(公告)日:1995-11-14

    申请号:US99232

    申请日:1993-07-29

    IPC分类号: C07D307/33 C07D307/12

    CPC分类号: C07D307/33

    摘要: A process for the preparation of 3-(2'-acyloxyethyl)-dihydro-2(3H)furanones of the general formula I ##STR1## in which R.sup.1 denotes C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.8 cycloalkyl, aryl, C.sub.7 -C.sub.12 aralkyl, or C.sub.7 -C.sub.12 alkylaryl, in which a 3-(2'-oxyethyl)-dihydro-2(3H)furanone of the general formula II ##STR2## in which R.sup.2 denotes C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.8 cycloalkyl, aryl, C.sub.7 -C.sub.12 aralkyl, or C.sub.7 -C.sub.12 alkylaryl is caused to react with a carboxylic acid, a carboxylic anhydride, and/or an acyl halide in the presence of an acid catalyst at temperatures of from 50.degree. to 250.degree. C. and pressures of from 0.1 to 100 bar.

    摘要翻译: 制备通式I,C5-C8环烷基,芳基,C7-C12芳烷基或C7-C12烷基芳基的3-(2'-酰氧基乙基) - 二氢-2(3H)呋喃酮的方法,其中3 - (2'-氧乙基) - 二氢-2(3H)呋喃酮,其中R 2表示C 1 -C 12烷基,C 5 -C 8环烷基,芳基,C 7 -C 12芳烷基或C 7 -C 12芳烷基, C12烷基芳基在酸催化剂存在下,在50-250℃,压力为0.1-100巴的条件下,与羧酸,羧酸酐和/或酰卤反应。

    Preparation of tetrahydropyran-4-carboxylic acid and esters thereof
    9.
    发明授权
    Preparation of tetrahydropyran-4-carboxylic acid and esters thereof 失效
    四氢吡喃-4-羧酸及其酯的制备

    公开(公告)号:US5371246A

    公开(公告)日:1994-12-06

    申请号:US110219

    申请日:1993-08-23

    CPC分类号: C07D309/08

    摘要: A process for the preparation of tetrahydropyran-4-carboxylic acid and esters thereof of the general formula I ##STR1## in which R.sup.1 denotes hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.5 -C.sub.8 cycloalkyl, or aryl by the reaction of a dihydro-2(3H)furanone of the general formula II ##STR2## in which R.sup.2 denotes hydrogen, C.sub.1 -C.sub.6 alkyl, or --CO--R.sup.3 andR.sup.3 denotes hydrogen or C.sub.1 -C.sub.6 alkyl, with water or an alcohol of the general formula IIIR.sup.1 --OH (III),in whichR.sup.1 has the aforementioned meaning,at temperatures ranging from 200.degree. to 350.degree. C. in the presence of a heterogenous acid catalyst, in which use is made of a fixed heterogenous acid catalyst.

    摘要翻译: 制备通式I的四氢吡喃-4-羧酸及其酯的方法,其中R 1表示氢,C 1 -C 6烷基,C 5 -C 8环烷基或芳基,其中二氢 -2(3H)呋喃酮,其中R 2表示氢,C 1 -C 6烷基或-CO-R 3,R 3表示氢或C 1 -C 6烷基,其中R 2表示氢或C 1 -C 6烷基, 在异种酸催化剂的存在下,在200〜350℃的温度范围内,通式III的R1-OH(Ⅲ),其中R 1具有上述含义,其中使用固定的异种酸催化剂。

    Pyridine derivatives and their use for controlling undesirable plant
growth
    10.
    发明授权
    Pyridine derivatives and their use for controlling undesirable plant growth 失效
    吡啶衍生物及其用于控制​​不希望的植物生长的用途

    公开(公告)号:US5262387A

    公开(公告)日:1993-11-16

    申请号:US783310

    申请日:1991-11-20

    摘要: Pyridine derivatives of the formulae ##STR1## wherein W, X, Y and Z are each C--R.sup.4, N or N.fwdarw.O, with the proviso that the ring contains only one heteroatom, and the substituents R.sup.1, R.sup.2 and R.sup.3 have the following meanings:R.sup.1 is alkoxy, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, or substituted or unsubstituted alkynyl,R.sup.2 is hydrogen,R.sup.3 is formyl, 4,5-dihydrooxazol-2-yl or --CO--A--R.sup.5 or --CO--NR.sup.6.sup.R.sup.7, whereR.sup.4 is halogen, nitro, cyano, substituted or unsubstituted alkyl, substituted or unsubstituted benzyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, alkoxy, alkylthio, haloalkoxy, haloalkylthio, alkenyloxy, alkynyloxy, alkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl, substituted or unsubstituted phenoxy or phenylthio, a substituted or unsubstituted 5- or 6-membered heterocyclic radical having one or two heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen, or is substituted or unsubstituted phenyl,A is oxygen or sulfur,R.sup.5 is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted benzyl, cycloalkyl, substituted or unsubstituted phenyl,one equivalent of a cation or the radical --N.dbd.CR.sup.8 R.sup.9 andR.sup.6 and R.sup.7 are hydrogen or alkyl or together denote a methylene chain having 4 or 5 members,their agriculturally utilizable salts, and their use for controlling unwanted plant growth.

    摘要翻译: 其中W,X,Y和Z各自为C-R 4,N或N-> O的吡啶衍生物,条件是环仅含有一个杂原子,并且取代基R 1,R 2和 R3具有以下含义:R 1是烷氧基,取代或未取代的烷基,取代或未取代的环烷基,取代或未取代的烯基,或取代或未取代的炔基,R 2是氢,R 3是甲酰基,4,5-二氢恶唑-2-基或 - CO-A-R5或-CO-NR6R7,其中R4是卤素,硝基,氰基,取代或未取代的烷基,取代或未取代的苄基,取代或未取代的环烷基,取代或未取代的烯基,取代或未取代的炔基,烷氧基,烷硫基,卤代烷氧基 卤代烷硫基,烯氧基,炔氧基,烷基亚磺酰基,烷基磺酰基,卤代烷基磺酰基,取代或未取代的苯氧基或苯硫基,取代或未取代的具有一个或两个选自基团的杂原子的5-或6-元杂环基 氧,硫和氮的取代基,或者是取代或未取代的苯基,A是氧或硫,R5是氢,取代或未取代的烷基,取代或未取代的苄基,环烷基,取代或未取代的苯基,1当量的阳离子或基团 -N = CR8R9,R6和R7是氢或烷基或一起表示具有4或5个成员的亚甲基链,它们的农业上可利用的盐,以及它们用于控制不想要的植物生长的用途。