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    • 39. 发明公开
    • 4-알콕시카르보닐-5-클로로피라졸 유도체의 제조방법
    • 生产4-烷氧羰基-5-氯代吡唑衍生物的方法
    • KR1020010037636A
    • 2001-05-15
    • KR1019990045282
    • 1999-10-19
    • 한국화학연구원
    • 김대황고영관장해성류재욱우재춘구동완
    • C07D231/10C07D231/14
    • PURPOSE: Provided is a method for producing 4-alkoxycarbonyl-5-chloropyrazol derivative in higher yield than conventional methods. CONSTITUTION: The method for producing 4-alkoxycarbonyl-5-chloropyrazol derivative of the formula (1) comprises the steps of: reacting 4-alkoxycarbonyl-5-hydroxypyrazole represented by formula (2) with POCl3 and tertiary ammonium salt for chlorination of compound of formula (2); removing an excess of POCl3 by distillation under reduced pressure to obtain a residual solution; and adding aliphatic alcohols into the residual solution for esterification of the chlorinated 4-alkoxycarbonyl-5-hydroxypyrazole, in which R1 is alkyl, pyridyl, or phenyl having C1 to C4; R2 is hydrogen, C1 to C6 alkyl, or C1 to C6 haloalkyl; R3 is C1 to C6 alkyl; and the tertiary ammonium salt is tetramethyl ammonium chloride, benzyltrimethyl ammonium chloride or benzyltriethyl ammonium chloride.
    • 目的:提供比常规方法更高产率的4-烷氧基羰基-5-氯吡唑衍生物的制备方法。 构成:式(1)的4​​-烷氧基羰基-5-氯吡唑衍生物的制备方法包括以下步骤:将由式(2)表示的4-烷氧基羰基-5-羟基吡唑与POCl 3和叔铵盐反应,以氯化化合物 公式(2); 通过减压蒸馏除去过量的POCl 3,得到残余溶液; 并向残留的溶液中加入脂族醇以酯化氯化的4-烷氧基羰基-5-羟基吡唑,其中R 1是烷基,吡啶基或具有C 1至C 4的苯基; R2是氢,C1-C6烷基或C1-C6卤代烷基; R3是C1-C6烷基; 叔铵盐为四甲基氯化铵,苄基三甲基氯化铵或苄基三乙基氯化铵。
    • 40. 发明授权
    • 술폰아미드 유도체
    • 磺酰胺衍生物
    • KR100267506B1
    • 2000-11-01
    • KR1019980000502
    • 1998-01-10
    • 한국화학연구원
    • 김대황장해성고영관류재욱우재춘구동완김진석
    • C07D487/04
    • PURPOSE: Provided are novel sulfonamide derivatives represented by chemical formula 1 and herbicide compositions containing the same, which have superior herbicidal selectivity against various weeds with general application amount of 0.01¯ 10kg/ha. The sulfonamide derivatives are preferably mixed with additives or carriers for more effective applications. CONSTITUTION: The novel sulfonamide derivatives are represented by the chemical structure 1, where Ra represents hydrogen atom, halogen atom, C1¯C6 alkyl group, or C1¯C3 mono or poly haloalkyl group; Rb represents hydrogen atom, halogen atom, C1¯ C6 alkyl group, 1¯3 halogen substituted C1¯C6 haloalkyl group, C1¯C3 alkyl carbonyl group, or C1¯C6 alkoxycarbonyl group; Rc represents hydrogen atom, halogen atom, C 1¯C6 alkyl group, or C1¯C6 haloalkyl group; E is N or CH; X, Y, and Z are independently hydrogen atom, halogen atom, C1¯C6 alkyl group, C1¯C6 alkoxy group, C1¯C6 mono or poly haloalkyl group, or C1¯C6 mono or poly haloalkoxy group.
    • 目的:提供由化学式1表示的新型磺酰胺衍生物和含有该化合物的除草剂组合物,其具有对各种杂草的优良除草选择性,一般施用量为0.01〜10kg / ha。 磺酰胺衍生物优选与添加剂或载体混合以用于更有效的应用。 构成:新型磺酰胺衍生物由化学结构1表示,其中Ra表示氢原子,卤素原子,C 1 -C 6烷基或C 1 -C 3单或多卤代烷基; R b表示氢原子,卤原子,C 1 -C 6烷基,1〜3卤素取代的C 1 -C 6卤代烷基,C 1 -C 3烷基羰基或C 1 -C 6烷氧基羰基; Rc表示氢原子,卤素原子,C 1 -C 6烷基或C 1 -C 6卤代烷基; E为N或CH; X,Y和Z独立地为氢原子,卤素原子,C 1 -C 6烷基,C 1 -C 6烷氧基,C 1 -C 6单或多卤代烷基或C 1 -C 6单卤代烷基或聚卤代烷氧基。