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    • 2. 发明申请
    • PROCESS FOR MANUFACTURING SUBSTITUTED 5-METHOXYMETHYLPYRIDINE-2,3-DICARBOXYLIC ACID DERIVATIVES
    • 制备取代的5-甲氧基甲基吡啶-2,3-二羧酸衍生物的方法
    • WO2010066669A1
    • 2010-06-17
    • PCT/EP2009/066496
    • 2009-12-07
    • BASF SECORTES, David
    • CORTES, David
    • C07D213/80
    • C07D213/80
    • Process for manufacturing substituted 5-methoxymethylpyridine-2,3-dicarboxylic acid derivatives Abstract A process for manufacturing a 2,3-disubstituted-5-methoxymethylpyridine of formula (I), where Z is H or halogen; Z 1 is H, halogen, CN or NO 2 ; Y 2 is OM, and M is an alkali metal or an alkaline earth metal, comprises the step of: (i) reacting a compound of formula (II) where Q is a tertiary aliphatic or cyclic, saturated, partially unsaturated or aromatic amine; Z is H or halogen; Z 1 is H, halogen, CN or NO 2 ; Y 1 and Y 2 are each independently OR 1 , NR 1 R 2 , or when taken together Y 1 Y 2 is -O-, -S- or -NR 3 -; R 1 and R 2 are each independently H, C 1 -C 4 alkyl optionally substituted with C 1 -C 4 alkoxy or phenyl optionally substituted with one to three C 1 -C 4 alkyl groups, C 1 -C 4 alkoxy groups or halogen atoms, or phenyl optionally substituted with one to three C 1 -C 4 alkyl groups, C 1 -C 4 alkoxy groups or halogen atoms; R 3 is H or C 1 -C 4 alkyl, in a methanol/H 2 O mixture, comprising at least 20% by weight H 2 O (based on the sum of water and bromide (II)), with a base comprising MOCH 3 and/or MOH, where M is alkali metal or alkaline earth metal, under pressure in a closed vessel at a temperature of from 75 to 110°C. Compounds of formula (I) are useful intermediates in the synthesis of herbicidal imidazolinones, like imazamox.
    • 制备取代的5-甲氧基甲基吡啶-2,3-二羧酸衍生物的方法摘要制备式(I)的2,3-二取代-5-甲氧基甲基吡啶的方法,其中Z为H或卤素; Z1是H,卤素,CN或NO2; Y2是OM,M是碱金属或碱土金属,包括以下步骤:(i)使Q为叔脂族或环状饱和,部分不饱和或芳族胺的式(II)化合物反应; Z是H或卤素; Z1是H,卤素,CN或NO2; Y1和Y2各自独立地为OR1,NR1R2,或者当Y1Y2为-O - , - S-或-NR3-时; R 1和R 2各自独立地为H,任选地被C 1 -C 4烷氧基取代的C 1 -C 4烷基或任选被一至三个C 1 -C 4烷基,C 1 -C 4烷氧基或卤素原子取代的苯基或任选被一至三个 C1-C4烷基,C1-C4烷氧基或卤原子; 在甲醇/ H 2 O混合物中,R 3是H或C 1 -C 4烷基,其包含至少20重量%的H 2 O(基于水和溴(II)的总和))与包含MOCH 3和/或MOH的碱,其中M 是碱金属或碱土金属,在密封容器中在75至110℃的温度下进行压力。 式(I)化合物是合成除草咪唑啉酮类似咪唑氧化物的有用中间体。