Process for the preparation of arylamides of heteroaromatic carboxylic acids
    3.
    发明授权
    Process for the preparation of arylamides of heteroaromatic carboxylic acids 失效
    用于制备杂芳族羧酸芳基酰胺的方法

    公开(公告)号:US06175011B1

    公开(公告)日:2001-01-16

    申请号:US09280975

    申请日:1999-03-30

    IPC分类号: C07D25112

    摘要: A process for the preparation of arylamides of heteroaromatic carboxylic acids of the formula: in which each An is nitrogen or CRn (n=1-5), with the proviso that at least one of the ring members is nitrogen and that two nitrogen atoms are not bonded directly to one another; R1 to R5, if present, independently of one another are hydrogen, C1-4-alkyl or aryl, also one of the substituents R1 to R5 can be a group of the formula —OR, in which R is an optionally substituted aromatic or heteroaromatic radical; R6 is hydrogen or C1-4-alkyl; and R7 is an optionally substituted aromatic or heteroaromatic radical. The amides are obtained from the corresponding heteroaromatic halogen compounds, the corresponding aromatic amines and carbon monoxide in the presence of a palladium diphosphine complex. Compounds of this class, especially those in which one of the substituents R1 to R5 is an aryloxy group, are important herbicides.

    摘要翻译: 制备下式的杂芳族羧酸的芳基酰胺的方法:其中每个An是氮或CR n(n = 1-5),条件是至少一个环成员是氮并且两个氮原子是 不直接相互粘合; R 1至R 5(如果存在)彼此独立地是氢,C 1-4 - 烷基或芳基,取代基R 1至R 5中的一个也可以是式-OR的基团,其中R是任选取代的芳族或杂芳族 激进; R6是氢或C1-4烷基; 并且R 7是任选取代的芳族或杂芳族基团。 在钯二膦配合物存在下,酰胺由相应的杂芳族卤素化合物,相应的芳族胺和一氧化碳获得。 该类化合物,特别是其中一个取代基R 1至R 5为芳氧基的化合物是重要的除草剂。

    Process for preparing 4.6-bis(difluoromethoxy)pyrimidine derivatives
    5.
    发明授权
    Process for preparing 4.6-bis(difluoromethoxy)pyrimidine derivatives 失效
    制备4.6双(二氟甲氧基)嘧啶衍生物的方法

    公开(公告)号:US5856483A

    公开(公告)日:1999-01-05

    申请号:US893228

    申请日:1997-07-15

    CPC分类号: C07D239/60

    摘要: A process for preparing 4,6-bis(difluoromethoxy)pyrimidine derivatives of the general formula: ##STR1## wherein R is a C.sub.1-4 -alkyl or optionally substituted phenyl or benzyl, proceeding from the corresponding 4,6-dihydroxypyrimidine dialkali-metal salt. In the process, the educt is reacted under pressure with chlorodifluoromethane in a solvent selected from the group consisting of the ketones, in the presence of a base and a phase-transfer catalyst and in the presence of 40 to 100 mol per mol of water of the 4,6-dihydroxypyrimidine dialkali-metal salt to form the final product.

    摘要翻译: 制备通式如下的4,6-双(二氟甲氧基)嘧啶衍生物的方法:其中R是C 1-4 - 烷基或任意取代的苯基或苄基,从相应的4,6-二羟基嘧啶二碱基 - 金属盐。 在该方法中,在压力下,溶出物与氯二氟甲烷在选自酮的溶剂中,在碱和相转移催化剂存在下,在40-100mol / mol水 4,6-二羟基嘧啶二碱金属盐形成最终产物。

    Process for the production of 7-acylindoles
    6.
    发明授权
    Process for the production of 7-acylindoles 失效
    生产7-acolesoles的方法

    公开(公告)号:US5446162A

    公开(公告)日:1995-08-29

    申请号:US280738

    申请日:1994-07-26

    摘要: A process for the production of 7-acylindoles of the general formula: ##STR1## starting from indoline of the formula: ##STR2## Indoline is cyanized in a first stage to 7-cyanoindoline of the formula: ##STR3## The latter is catalytically dehydrogenated in a second stage to 7-cyanindole of the formula: ##STR4## The latter is then acylated in a third stage with an organometallic compound of the formula:R--Q Vinto the end product according to formula I.

    摘要翻译: 制备以下通式的7-丙氧基咪唑的方法:由下式的二氢吲哚开始:将二氢吲哚在第一阶段中氰化为具有下式的7-氰基二氢吲哚:后者 在第二阶段中催化脱氢为具有下式的7-氰基吲哚:然后将后者在第三阶段用具有下式的有机金属化合物R-QV酰化成根据式I的最终产物。