Preparation of cyanopyridines
    11.
    发明授权
    Preparation of cyanopyridines 失效
    制备氰基吡啶

    公开(公告)号:US4931564A

    公开(公告)日:1990-06-05

    申请号:US279041

    申请日:1988-12-02

    摘要: Cyanopyridines of the formula ##STR1## are prepared by reacting acrolein and an alkanal ##STR2## or its acetal or ketone of the formula ##STR3## where R.sup.1, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen, alkyl of 1 to 6 carbon atoms or aryl and R.sup.4 is alkyl and n is 0-11, with ammonia in the presence of a zeolite as a catalyst. The reaction is preferably carried out in the gas phase.

    摘要翻译: 通过使丙烯醛和其中R 1,R 2和R 3可以相同或不同并且各自为氢的烷基,其中R1,R2和R3可以相同或不同,可以通过使丙烯醛和链烷醛或其缩醛或酮的化学式< IMAGE> 碳原子或芳基,R4是烷基,n是0-11,氨在作为催化剂的沸石存在下进行。 反应优选在气相中进行。

    Preparation of 4-formyltetrahydropyrans
    12.
    发明授权
    Preparation of 4-formyltetrahydropyrans 失效
    4-甲酰基四氢吡喃的制备

    公开(公告)号:US4824973A

    公开(公告)日:1989-04-25

    申请号:US89752

    申请日:1987-08-26

    CPC分类号: C07D309/06 Y02P20/582

    摘要: 4-Formyltetrahydropyrans of the general formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.2 -C.sub.12 -alkenyl, C.sub.1 -C.sub.6 -alkoxy-substituted C.sub.1 -C.sub.12 -alkyl, C.sub.4 -C.sub.12 -cycloalkyl, unsubstituted or substituted aryl, hetaryl or aralkyl, or an unsubstituted or substituted, saturated or unsaturated 5-membered or 6-membered ring which may be interrupted by N, O or S, are prepared by a process in which a pyran derivative of the general formula II ##STR2## where R.sup.1 is as defined above, R.sup.2 and R.sup.3 are each OH or together are an oxygen atom and thus form an oxirane ring, and R.sup.4 is hydrogen where R.sup.2 and R.sup.3 are each OH, and is hydrogen or tert-butoxycarbonyl where R.sup.2 and R.sup.3 together are an oxygen atom, is treated at elevated temperatures with a catalyst selected from the group consisting of zeolites, phosphates, boric acid on a carrier and silica or mixtures of these. Novel 4-formyltetrahydropyrans are also proposed.

    摘要翻译: 其中R 1是氢,C 1 -C 12烷基,C 2 -C 12链烯基,C 1 -C 6烷氧基取代的C 1 -C 12烷基,C 4 -C 12环烷基,C 1 -C 12 - 烷基, 未取代或取代的芳基,杂芳基或芳烷基,或可被N,O或S中断的未取代或取代的饱和或不饱和的5元或6元环,是通过一般方法制备的, 式II其中R 1如上所定义,R 2和R 3各自为OH或一起为氧原子,因此形成环氧乙烷环,并且R 4为氢,其中R 2和R 3各自为OH并且为氢或 叔丁氧基羰基,其中R 2和R 3一起是氧原子,在高温下用选自沸石,磷酸盐,载体上的硼酸和二氧化硅或它们的混合物的催化剂进行处理。 还提出了新的4-甲酰基四氢吡喃。

    Preparation of enol ethers
    13.
    发明授权
    Preparation of enol ethers 失效
    烯醇醚的制备

    公开(公告)号:US4960954A

    公开(公告)日:1990-10-02

    申请号:US329007

    申请日:1989-03-27

    摘要: Enol ethers of the general formula I ##STR1## are prepared by eliminating the radical R.sup.4 OH from acetals or ketals of the formula II ##STR2## where the substituents R.sup.1 and R.sup.2 are each independently of the other hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.8 cycloalkyl, C.sub.3 -C.sub.8 -cycloalkenyl, unsubstituted or C.sub.1 -C.sub.4 -alkyl-substituted aryl or C.sub.7 -C.sub.16 aralkyl,R.sup.3 is --CR.sup.5 (OR.sup.4).sub.2, --COOR.sup.4 or --COR.sup.4,R.sup.4 is C.sub.1 -C.sub.20 -alkyl, C.sub.7 -C.sub.20 -alkylaryl or C.sub.7 -C.sub.20 -aralkyl,R.sup.5 is hydrogen or C.sub.1 -C.sub.8 -alkyl,in a process which comprises performing the reaction in the presence of phosphoric acid and/or phosphates on a carrier material and/or phosphates and/or zeolites as catalysts.

    摘要翻译: 通式I(I)的烯醇醚通过从式II(II)的缩醛或缩酮中除去基团R 4 OH来制备,其中取代基R 1和R 2各自独立地为氢,C1- C 1 -C 8烷基,C 3 -C 8环烷基,C 3 -C 8 - 环烯基,未取代的或C 1 -C 4烷基取代的芳基或C 7 -C 16芳烷基,R 3是-CR 5(OR 4)2,-COOR 4或-COR 4, - 烷基,C 7 -C 20 - 烷基芳基或C 7 -C 20 - 芳烷基,R 5是氢或C 1 -C 8 - 烷基,其包括在载体材料上的磷酸和/或磷酸盐存在下进行反应和/或 磷酸盐和/或沸石作为催化剂。

    Preparation of phenylacetaldehydes
    15.
    发明授权
    Preparation of phenylacetaldehydes 失效
    苯乙醛的制备

    公开(公告)号:US4929765A

    公开(公告)日:1990-05-29

    申请号:US274930

    申请日:1988-11-22

    摘要: Phenylacetaldehydes of the general formula I ##STR1## where R.sup.1 to R.sup.5 are each independently of the others hydrogen, alkyl, alkoxy, halogen, haloalkyl, haloalkoxy or haloalkylthio, by catalytic rearrangement in the presence of a zeolite, are prepared by reacting an epoxy of the formula II or a phenylglycol of the formula III ##STR2## where Y and Z can be identical to or different from each other and are each hydroxyl, alkoxy, aryloxy or acyloxy, in the gas phase over a borosilicate zeolite catalyst at from 70.degree. to 200.degree. C. under reduced pressure.

    摘要翻译: 通过在沸石存在下通过催化重排,其中R 1至R 5各自独立地为氢,烷基,烷氧基,卤素,卤代烷基,卤代烷氧基或卤代烷硫基的通式I(I)的苯基乙醛通过使 式II的环氧基或式III的苯基二醇其中Y和Z可以彼此相同或不同,并且各自为羟基,烷氧基,芳氧基或酰氧基,其中 气相在硼硅酸盐沸石催化剂上在70〜200℃下减压。

    Preparation of 3-(2-acyloxyethyl)-dihydro-2(3H)furanones
    16.
    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
    18.
    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
    19.
    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。