Abstract:
2-Oxyamino alkylidene-cyclohexane-1,3-dione derivs. of formula (I) are prepd. by reacting a cpd. of formula (II) with a substd. alkoxy amine or its acid addn. salt of formula H2N-OR4. In the formulas, R and R1 are each H, C1-3 lower alkoxy, OH, acetoxy or halogen; R2 is H; R3 is C2-3 alkyl or alkenyl; R4 is C1-3 lower alkyl or alkenyl. (I) have a good herbicidal effect.
Abstract:
PURPOSE: A new oxazole derivative obtained by using amide as a starting material is provided which has a strong antibacterial effect on plant pathogenic bacteria with a small amount, for example Pyricularia oryzae Cavera, Rhizoctonia SolaniAG-1, Botrytis cinerea KCI, Phytophthora infestans or the like. CONSTITUTION: An amid compound(formula II) is refluxed in a solvent of dichloroacetone and ethanol to give chloromethyl oxazole(formula III). A chlorine atom of the chloromethyl oxazole is substituted to an iodine atom by use of sodium iodide and then reacted with 2-(2-hydroxyphenyl)-3-methoxy acrylic acid methylester(formula IV)(in case of A=C) or 2-methoxyimino-(2-hydroxyphenyl)-acetic acid methylester(formula IV)(in case of A=N) to produce an oxazole derivative(formula I).
Abstract:
PURPOSE: Oxazinyl derivatives of the formula (I) wherein: R is H or methyl; X is H, Cl, trifluoromethyl, 2,4-dichlorophenyl, methoxy, or fluoro; Y is morpholine, piperidine, pyrrole, pyrrolidine, imidazole, or triazole; Z is phenyl, 2-fluorophenyl, 3-fluorophenyl, 2,4-chlorophenyl, or benzyl) which can be used as bactericide for agriculture and gardening are prepared. CONSTITUTION: The acetophenone derivatives of the formula (II) are provided in carbon disulfide and brome is added to the solution to give dibromoacetophenone derivatives, which is dissolved in methanol and hydroxyamine HCl salt is added to give oxime derivatives of the formula (III). The oxime of the formula (III) is dissolved in methylene chloride and cycled with arylether compound of the formula (IV) to give bromooxazine derivatives of the formula (V), which are dissolved in THF and reacted with morpholine, piperidine, pyrrole, pyrrolidine, imidazole, or triazole to give the compound of the formula (I).
Abstract:
본 발명은 식물병원균에 대하여 우수한 살균활성을 갖는 다음 구조식(I)로 표시되는 신규한 4H, 6H-피롤로[3,4-c]이소옥사졸 유도체와 이를 제조하는 방법에 관한 것이다.
상기식에서, R 1 은 페닐기 또는 할로겐원자나 C 1 ~C 3 알킬기로 치환된 페닐기이고, R 2 는 C 1 ~C 5 알킬기, 페닐기, 치환된 페닐기 또는 C 1 ~C 3 알콕시기이며, 이때 치환된 페닐기의 치환기는 할로겐원자, C 1 ~C 3 알킬기 또는 C 1 ~C 3 알콕시기이다.
Abstract:
The preparation method of isooxazol (I) dervatives which has antifungal activity consists of 1) reacting nitro-olefin and alcohol with basic catalyst to form nitro compounds, 2) dehydrating nitro compounds with triethylamine and phenylisocyanate to form cycles as (I) in benzene or dichlromethane. Derivatives of (I) are R1 = propyl or isopropyl, R2 = H or methyl, R3 = H, methyl, ethyl, phenyl, phenyl chloride, aldehyde, or oxime.
Abstract:
A issoxazoline diphenyl ether derivative of formula (I) is prepd. for use as a herbicide. The (I) is prepd. by reacting a compound of formula (II) with hydroxyamine or its acid salt. In the formula; X is nitrogen or carbon; Y is hydrogen, halogen or nitro; Z is chloride or CF3; R is cyano, methyl, methyl ester, ethyl ester, t-butyl ester or methyl ketone; R1 is methyl, amino etc.; R2 is cyano, methyl ketone, methyl ester or ethyl ester.