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公开(公告)号:US5023337A
公开(公告)日:1991-06-11
申请号:US469749
申请日:1990-01-19
IPC分类号: C07D235/32
CPC分类号: C07D235/32
摘要: The present invention is directed to the preparation of benzimidazole derivatives of the formula (I), ##STR1## wherein A=stands for S, SO or SO.sub.2,R.sup.1 =stands for C.sub.1-4 alkyl group,R.sup.2 =stands for C.sub.1-4 alkyl, C.sub.3-7 cycloalkyl or C.sub.6-10 aryl or aralkyl,comprising reacting a sulphochloride of the formula (II) ##STR2## with an alkyl aluminum compound of the formula (III).R.sub.n.sup.2 AlClhd (3-n) (III)The reaction is performed in one step.
摘要翻译: 本发明涉及制备式(I)的苯并咪唑衍生物,其中A = S,SO或SO 2,R 1 = C 1-4烷基,R 2代表C 1 1-4烷基,C 3-7环烷基或C 6-10芳基或芳烷基,其包括使式(II)的二氯化亚氨基与式(III)的烷基铝化合物反应。 Rn2AlClhd(3-n)(III)反应在一个步骤中进行。