A Comprehensive Study of the Heterocyclizations of N-Arylmaleimides and 6-Aminouracils
作者:Sergey Komykhov、Valentin Chebanov、Roman Rudenko、Sergey Desenko、Yulia Sen’ko、Oleg Shishkin、Irina Konovalova、Svetlana Shishkina
DOI:10.1055/s-0030-1260163
日期:2011.10
Heterocyclization reactions between N-arylmaleimides and 6-aminouracils were studied in detail. It was established that several directions are possible depending on the nature of reaction medium and the substituent character in the uracil component. The synthetic procedure leading to N-phenyl-2,4,7-trioxopyrido[2,3-d]pyrimidine-5-carboxamides in good-to-high yields was developed and key stages of the corresponding reaction were established.
详细研究了 N-芳基马来酰亚胺和 6-氨基脲嘧啶之间的异环化反应。根据反应介质的性质和尿嘧啶成分中取代基的特性,确定了几个可能的反应方向。研究人员开发了一种合成程序,可以高产率合成 N-苯基-2,4,7-三氧吡啶并[2,3-d]嘧啶-5-甲酰胺,并确定了相应反应的关键阶段。