| 摘要 |
<p>Cpds. of formula: (in which n is 2,3; X is NH or NR where R is alkyl; R1 is H, alkyl, alkenyl, aralkyl, arakenyl, aryl; R2 is one to four optional halogen, NO2, alkyl, alkenyl, aralkyl, aryl or aralkenyl gps. bound directly to the benzimidazole nucleus or via an O- or S-atom), together with their acid addn. salts, are prepd. by reaction of 2-formyl-benzimidazoles with 2-methylpyrimidines or 2-methylimidazoles.</p> |
