Abstract:
3,4,5,6-Terahydrophthalimides with herbicidal activity are provided, which compounds non-selectively control weeds in a fruit garden, and selectively control Gramineae and large-leaf weeds by treatment of a small amount of soil with the compounds without damage of useful crops. The 3,4,5,6-terahydrophthalimides represented by formula (1) are provided, wherein n is 0 or 1; X is Cl or CN; and R is H, halogen, CN, methyl, ethyl, COOH, CO2Me, CO2Et, methoxy, ethoxy, OCH2CO2Et, OCH(CH2)CO2Et, SCH3 or SO2CH3. An herbicidal composition comprises the 3,4,5,6-terahydrophthalimides represented by formula (1) or its salts. The 3,4,5,6-terahydrophthalimides represented by formula (1) are prepared by reacting a compound of formula (2) with a compound of formula (3) according to the reaction formula (1).
Abstract:
PURPOSE: A method for preparing o-(chloromethyl)benzoic acid ester derivatives is provided to use o-(chloromethyl)benzoic acid chloride as starting material and alcohol compound as both the reaction material and reaction solution under mild condition, give high yields and be useful for industrial production. CONSTITUTION: o-(Chloromethyl)benzoic acid ester derivatives represented by formula 1 is prepared by esterifying o-(chloromethyl)benzoic acid chloride of formula 2 with alcohol compounds. In the esterification, separate reaction solvent and base are not used. In formula 1, R1 is hydrogen atom, halogen atom, C1-C6 alkyl group, C1-C6 haloalkyl group, C1-C6 alkoxy group, C1-C6 alkoxycarbonyl group, nitro group or phenyl group; R2 is C1-C6 alkyl group, C1-C6 haloalkyl group or C3-C6 cycloalkyl group.
Abstract:
본 발명은 o -(카르보알콕시)페닐메탄술포닐 클로라이드 유도체의 제조방법에 관한 것으로서, 더욱 상세하게는 o- (클로로메틸)벤조산 에스테르로부터 중간체 화합물으로서 o- (카르보알콕시)페닐메탄티오술폰산염을 합성한 다음, 염소화반응시켜 술포닐우레아 제초제 합성에 중요한 화합물인 다음 화학식 1로 표시되는 o -(카르보알콕시)페닐메탄술포닐 클로라이드 유도체를 제조하는 새로운 방법에 관한 것이다.
상기 화학식 1에서 : R 1 은 수소원자, 할로겐원자, 니트로기, C 1 ∼ C 4 의 알킬기 또는 C 1 ∼ C 4 의 할로알킬기를 나타내고; R 2 는 C 1 ∼ C 6 의 알킬기 또는 C 3 ∼ C 6 의 사이클로알킬기를 나타낸다.
Abstract:
A derivative from fluorine-containing phenyl formamidine is provided to secure excellent insecticidal activity for prevention the breeding and extermination of harmful insects while maintaining useful plants. A derivative from fluorine-containing phenyl formamidine is represented by the formula I. In the formula 1, F is fluorine; X indicates a hydrogen atom, cyano, amino, carbo C1-C2 alkoxy, C1-C2 alkylcarbamoyl, C1-C4 alkyl or an alkoxy group; R1 shows a hydrogen atom or a C1-C4 alkyl group; Y is a C1-C8 alkyl or a dialkyl aminosulphenyl group; and n is 1,2,3 or 4. If the Y is the dialkyl aminosulphenyl group, the derivative from fluorine-containing phenyl formamidine is represented by the formula II.