PREPARATION OF ISOXAZOLE-5-CARBOXAMIDE DERIVATIVES

    公开(公告)号:CA2026762A1

    公开(公告)日:1991-04-04

    申请号:CA2026762

    申请日:1990-10-02

    Abstract: - 17 - O.Z. 0050/41146 of the Disclosure: A process for preparing isoxazole-5-carboxamide derivatives of the formula I I where R1 is an aliphatic radical of 1 to 20, a cycloaliphatic radical of 3 to 10, an aromatic radical of 6 to 10, a heteroaromatic or heterocyclic radical of 3 to 10 or an araliphatic radical of 4 to 12 carbon atoms, it being possible for these radicals to carry substituents which are inert under the reaction conditions, R2 is alkyl, R4 and R5 are identical or different and are each hydrogen, C1-C6-alkyl, C1-C5-cyanoalkyl, C2-C6-alkenyl or C2-C5-alkynyl, and/or C3-C8-cycloalkyl which is unsubstituted or substituted by from 1 to 3 C1-C4-alkyl groups, or are linked to form a 5- to 8membered cycloaliphatic ring which can contain another nitrogen or an oxygen, with the proviso that R2 is not ethyl if R1 is methyl and R4 and R5 are a combination of hydrogen and isopropyl, entails reacting isoxazole-4,5-dicarboxylic diesters of the formula II II where R3 is alkyl which is identical to or different from R2, with an amine of the formula III - 18 - O. Z . 0050/41146 III at from 0 to 100.degree.C.

    CARBOXAMIDES OF ISOXAZOLE- AND ISOTHIAZOLE-CARBOXYLIC ACIDS

    公开(公告)号:CA2025939A1

    公开(公告)日:1991-03-23

    申请号:CA2025939

    申请日:1990-09-21

    Abstract: Carboxamides Ia, Ib, Ic and Id (X = 0, S; R1 = H, halogen, substituted or unsubstituted alkyl, substi- tuted or unsubstituted benzyl, alkoxy, alkylthio, haloalkoxy, haloalkyl- thio, substituted or unsubstituted phenyl, substituted or unsubstituted phenoxy or phenylthio, a substituted or unsubstituted 5- or 6-membered heterocyclic radical containing one or two heteroatoms, cycloalkyl- substituted alkyl, substituted or unsubstituted alkenyl which may be epoxidized, substituted or unsubstituted alkynyl, substituted or unsubstituted cycloalkyl or cycloalkenyl; R1' - cycloalkyl-substituted alkyl, substituted or unsubstituted alkenyl which may be epoxidized, substituted or unsubstituted cycloalkenyl; R2 = CHO, 4,5-dihydrooxazol-2- yl, COYR5, CONR6R7; Y = 0, S; R5 = H, substituted or unsubstituted alkyl, cycloalkyl, substituted or unsubstituted alkenyl, substituted or unsub- stituted cycloalkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted phenyl, a 5- or 6-membered heterocyclic radical contain- ing up to 3 heteroatoms, benzotriazole, N-phthalimido, tetrahydrophthal- imido, succinimido, maleiimido, 2,2-dimethyl-1,3-dioxolan-4-ylmethyl, 1,3-dioxolan-2-on-4-ylmethyl, and when Y = 0: one equivalent of a cation from the group of the alkali or alkaline earth metals, Mn, Cu, Fe, ammonium and substituted ammonium, a radical -N=CR8R9 or -W-Z; R8, R9 = H, substituted or unsubstituted alkyl, substituted or unsubstituted halo- alkyl, cycloalkyl, alkoxy, furanyl, substituted or unsubstituted phenyl; R8+R9 = 4-7-membered methylene chain; W = alkylene chain, ethoxyethylen e chain, butylene, butynylene chain; Z = a molecular moiety bonded to W in the .omega.-position and is the same as that linked to W in the .alpha.- position of W; R6=H, alkyl, cycloalkyl; R7=H; alkyl; -C(0-alkyl)=N-H or -C(0-alkyl)=N- alkyl; R6+R7 = 4-5-membered methylene chain; R3 = H, substituted or unsub- stituted alkyl, substituted or unsubstituted cycloalkyl; R4 = H, OH, alkoxy, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, substituted or unsub- stituted alkynyl, di-(C1-C4)-alkylamino, a substituted or unsubstituted 5- or 6-membered heterocyclic radical containing one or two heteroatoms, sub- stituted or unsubstituted phenyl, substituted or unsubstituted naphthyl; R3+R4 = 4-7-membered methylene chain which may be interrupted by 0, S o r N-CH3, or -(CH2) 3-CO-) and their environmentally tolerated salts. 40 The compounds Ia to Id are suitable as herbicides.

    PROCESS FOR THE PREPARATION OF AN N-SUBSTITUTED 3,4,5,6-TETRAHYDROPHTHALIMIDE

    公开(公告)号:CA2008988A1

    公开(公告)日:1990-08-11

    申请号:CA2008988

    申请日:1990-01-31

    Abstract: BASF Aktiengesellschaft O.Z. 0050/40574 Process for the preparation of an N-substituted 3,4.5.6tetrahydrophthalimide of the disclosure: A process for the preparation of an N-substituted 3,4,5,6tetrahydrophthalimide of the general formula I I in which R1 stands for hydrogen or fluorine, R2 stands for hydrogen, chlorine, bromine or C1-C4-alkyl and R3 is C1-C6-alkyl or C5-C6-cycloalkyl by reacting an aldehyde of the general formula II II with a phosphorane of the general formula III III in which Ar is a substituted or unsubstituted phenyl radical, at a temperature of from -10.degree. to +100.degree.C and in the presence of a solvent.

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