diethyl 1-(2-hydroxyethyl)-4-[5-methyl-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]-1,2-butadienylphosphonate 在
silver nitrate 作用下,
以
四氢呋喃 、
水 为溶剂,
反应 12.0h,
生成 diethyl 6-{[5-methyl-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]methyl}-3,6-dihydro-2H-pyran-4-ylphosphonate 、 diethyl 2-{[5-methyl-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]ethyl}-4,5-dihydro-3-furanylphosphonate