The present invention relates to compounds of formula (I) wherein R1 is hydrogen, lower alkyl or benzyl which may be optionally substituted by halogen or lower alkoxy;
本发明涉及式(I)化合物及其药用活性盐,其中R1是氢、低级烷基或苄基,其可任选地被卤素或低级烷氧基取代;
This article studies the reactions of nitrous acid with eldest aromatic amine and diazonium salts substituted by halogen, and investigates the condition and mechanism of those reactions.
通过对亚硝酸与伯芳胺反应形成重氮盐,以及重氮盐被卤素取代生成卤代芳烃的反应条件和反应机理的研究。
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