3,3,5-Trichloroglutaric acid imide
    72.
    发明授权
    3,3,5-Trichloroglutaric acid imide 失效
    3,3,5-三氯戊二酰亚胺

    公开(公告)号:US4360676A

    公开(公告)日:1982-11-23

    申请号:US209576

    申请日:1980-11-24

    摘要: 3,3,5-Trichloroglutaric acid imide can be produced either by reacting a trichloroacetic acid alkyl ester, in the presence of a catalyst, with acrylonitrile to the corresponding 2,2,4-trichloro-4-cyanobutyric acid alkyl ester, converting this into the amide, and cyclizing the 2,2,4-trichloro-4-cyano-butanecarboxylic acid amide, in an aqueous acid medium, to the 3,3,5-trichloroglutaric acid imide; or by reacting trichloroacetonitrile, in the presence of a catalyst, to 2,2,4-trichloro-4-cyanobutyronitrile, and cyclizing this, in an aqueous acid medium, to 3,3,5-trichloroglutaric acid imide. The catalyst used for the addition reactions can be for example copper(I) chloride or copper(II) oxide. 3,3,5-Trichloroglutaric acid imide can be converted, by treatment with a dehydrating chlorinating agent, such as POCl.sub.3, into the known 2,3,5,6-tetrachloropyridine, which for its part is used for producing various active substances, particularly insecticides, herbicides and fungicides.

    摘要翻译: 3,3,5-三氯戊二酸酰亚胺可以通过使三氯乙酸烷基酯在催化剂存在下与丙烯腈反应到相应的2,2,4-三氯-4-氰基丁酸烷基酯中,将其转化为 并将2,2,4-三氯-4-氰基 - 丁酰甲酰胺在含水酸性介质中环化为3,3,5-三氯戊二酸酰亚胺; 或在催化剂存在下,使三氯乙腈与2,2,4-三氯-4-氰基异丁腈反应,并将其在含水酸性介质中环化为3,3,5-三氯戊二酸酰亚胺。 用于加成反应的催化剂可以是例如氯化铜(I)或氧化铜(II)。 通过用脱氯氯化剂如POCl 3处理,可以将3,3,5-三氯戊二酸酰亚胺转化成已知的2,3,5,6-四氯吡啶,其用于制备各种活性物质, 特别是杀虫剂,除草剂和杀真菌剂。