4,6-dihydroxy-2,8-dimercapto-5-(p-nitrophenyl)-5H-pyrano[2,3-d:6,5-d']dipyrimidine 、
4-chlorine-6-hydroxy-5-(4-nitrophenyl)-5,9-dihydro-1H-pyrano[2,3-d;6,5-d']dipyrimidine-2,8-dithione 在
氨 、
水 作用下,
反应 4.0h,
以71%的产率得到4-Amino-6-hydroxy-5-(4-nitrophenyl)-5,9-dihydro-1H-pyrano[2,3-d6,5-d']dipyrimidine-2,8-dithione/4,6-Dihydroxy-5-(4-nitrophenyl)-5,9-dihydro-1H-pyrano[2,3-d6,5-d']dipyrimidine-2,8-dithione/NH3 (molar ratio=1:1:1)