Synthesis and biological activity of acyl derivatives of 4-amino-2,3-dimethyl-1-phenylpyrazol-5-one
作者:V. G. Voronon、Z. I. Shramova、V. A. Aleshina、A. S. Zaks、E. L. Pidemskii、A. F. Goleneva
DOI:10.1007/bf00759469
日期:1981.6
functional derivatives, such as the acid chloride or anhydride, in the presence of a dehydration or dehydrohalogena~ tion agent. Phosphorusoxychloride, thionylchloride, phosphorus trichloride, phosphorus pentachloride, and the like can be used as dehydrating agents. As dehydrohalogenation agents, excess 4-methylaminoantipyrene, tertiary amines (triethylamine, pyridine) or in-