A convenient procedure for the preparation of 5,6-dihydro-6-nitro-5-phenylfuro[2,3-d]pyrimidin-4(3H)-ones and 5-phenylfuro[2,3-d]pyrimidin-4(3H)-ones
作者:Daniel Dauzonne、Anne Adam-Launay
DOI:10.1016/s0040-4020(01)92249-5
日期:1992.4
Z-(2-chloro-2-nitroethenyl)benzenes with 4,6-dihydroxypyrimidine provides 5,6-dihydro-6-nitro-5-phenylfuro[2,3-d]pyrimidin-4(3H)-ones at room temperature. Involving the same starting materials, but using DBU in refluxing ethanol instead of triethylamine, the so far unknown 5-phenylfuro[2,3-d]pyrimidin-4(3H-ones are obtained
Z-(2-氯-2-硝基乙烯基)苯与4,6-二羟基嘧啶的三乙胺促进的缩合反应提供5,6-二氢-6-硝基-5-苯基呋喃[2,3-d]嘧啶-4(3 H)-在室温下一个。使用相同的起始原料,但在回流的乙醇中使用DBU代替三乙胺,获得了迄今未知的5-苯基呋喃[2,3-d]嘧啶-4(3 H -ones)