[EN] PROCESS FOR PREPARING 2-AMINO-5-CYANOBENZOIC ACID DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE L'ACIDE 2-AMINO-5-CYANOBENZOÏQUE
申请人:DU PONT
公开号:WO2009061991A1
公开(公告)日:2009-05-14
Disclosed is a method for preparing a compound of Formula 1 comprising contacting a compound of Formula 2 with at least one alkali metal cyanide of Formula 3 and a compound of Formula 4 wherein R1 is NHR3 or OR4; R2 is CH3 or Cl; R3 is H, C1-C4 alkyl, cyclopropyl, cyclopropylcyclopropyl, cyclopropylmethyl or methylcyclopropyl; R4 is H or C1-C4 alkyl; X is Br, Cl or I; and R5, R6, R7, R8, R9 and R10 are as defined in the disclosure. Also disclosed is a method for preparing a compound of Formula 4 wherein R9 and R10 together are a cycloalkadiene bidentate ligand, comprising contacting a compound of Formula 5 wherein Y is Cl, Br or I, with a cycloalkadiene bidentate ligand, at least one metal reducing agent and a nitrile solvent. Also disclosed is a method for preparing a compound of Formula 1 comprising preparing a compound of Formula 4 by contacting a compound of Formula 5 with a cycloalkadiene bidentate ligand and at least one metal reducing agent, and then contacting the reaction mixture comprising the compound of Formula 4 with a compound of Formula 2 and at least one alkali metal cyanide of Formula 3; and further disclosed is a method for preparing a compound of Formula 6 wherein R15, R16, R17 and Z are as defined in the disclosure using a compound of Formula 1, characterized by preparing the compound of Formula 1 by a method disclosed above.
公开了一种制备化合物1的方法,包括将化合物2与至少一种化合物3的碱金属氰化物和化合物4接触,其中R1为NHR3或OR4;R2为CH3或Cl;R3为H,C1-C4烷基,环丙基,环丙基环丙基,环丙基甲基或甲基环丙基;R4为H或C1-C4烷基;X为Br,Cl或I;而R5、R6、R7、R8、R9和R10如披露中所定义。还公开了一种制备化合物4的方法,其中R9和R10共同为环烷二烯双齿配体,包括将化合物5(其中Y为Cl,Br或I)与环烷二烯双齿配体,至少一种金属还原剂和腈溶剂接触。还公开了一种制备化合物1的方法,包括通过将化合物5与环烷二烯双齿配体和至少一种金属还原剂接触,然后将包含化合物4的反应混合物与化合物2和至少一种化合物3的碱金属氰化物接触来制备化合物4;进一步公开了一种制备化合物6的方法,其中R15、R16、R17和Z如披露中所定义,使用化合物1的方法,其特征在于通过上述公开的方法制备化合物1。