Pharmacologically active 4-oxo-4H-chromen-2-carboxylic acids. Part III. Mechanistic aspects of the decomposition of ethyl 6-azido-4-oxo-4H-chromen-2-carboxylate
作者:M. I. Chohan、A. O. Fitton、B. T. Hatton、H. Suschitzky
DOI:10.1039/j39710003079
日期:——
The mechanism of the decomposition of ethyl 6-azido-4-oxo-4H-chromen-2-carboxylate in the presence of polyphosphoric and acetic acids has been studied. The probable participation of ethyl 6-(N-acetoxyacetamido)-4-oxo-4H-chromen-2-carboxylate is discussed, and evidence is presented which indicates that this compound rearranges intermolecularly prior to oxazolochromone formation.
研究了在多
磷酸和
乙酸存在下6-
叠氮基-4-氧代-4- H -4
铬酸-2-
羧酸乙酯的分解机理。讨论了6-(N-
乙酰氧基乙酰氨基)-4-氧代-4 H-
铬-2-
羧酸乙酯的可能的参与,并提供了证据表明该化合物在
恶唑并
色酮形成之前在分子间重排。