作者:Urs Hengartner、Jean-Claude Muller、Henri Ramuz
DOI:10.1002/hlca.19830660229
日期:1983.3.16
Thermal cyclization of the pyrimidine-N-oxide dicarbamate 2 gives a 95:5 mixture of the 2-oxo-2H-[1,2,4]oxadiazolo[2,3-a]- and [2,3-c]pyrimidinecarbamates 3 and 4. An efficient procedure for the conversion of 3 to 4, and vice versa, is described.
嘧啶-N-氧化物二氨基甲酸酯2的热环化产生了2-oxo-2 H- [1,2,4] oxadiazolo [2,3- a ]-和[2,3- c ]的95:5混合物pyrimidinecarbamates 3和4.用于转化的有效程序3至4,并且反之亦然,进行说明。