dynamically controlled product, which undergoes cyclization in acid medium to afford 2,6-dihydroxy-4-phenylnicotinonitrile. Some azo derivatives of nicotinonitriles and of 2-aminopyran are described. 5-Arylazo-2-aminopyrans are transformed by acid treatment into pyridazine derivatives, whereas without the arylazo substituent pyridines are obtained.
对2-
氰基-5-苯基-3,5-二氧
戊腈进行醇解,然后进行Knoevenagel缩合,得到4,4-二
氰基-
3-苯基-3-丁烯酸乙酯,一种动态动态控制的产物,在酸性介质中进行环化,得到2,6-二羟基-
4-苯基烟腈。描述了
烟腈和2-
氨基
吡喃的一些偶氮衍
生物。通过酸处理将5-芳基偶氮-2-
氨基
吡喃转化成
哒嗪衍
生物,而没有芳基偶氮取代基,得到
吡啶。