5-Allylpyrimidine-4-ones react with arylsulfenyl chlorides in dichloromethane with the formation of 5-[(2-arylsulfanyl)-3-chloropropyl]-pyrimidine-4-ones that under the action of sodium acetate undergo cyclization into 6-arylsulfanyl-6,7-dihydro-5H-pyrano[2,3-d]pyrimidines. At performing similar reactions in nitromethane an intramolecular electrophilic cyclization occurs affording 6-[(arylsulfanyl)methyl]-5
5-烯丙基
嘧啶-4-酮与
二氯甲烷中的芳基亚
硫酰氯反应,生成5-[(2-芳基
硫烷基)-3-
氯丙基]-
嘧啶-4-酮,在
乙酸钠的作用下环化成6-芳基
硫烷基- 6,7-二氢-5 H-
吡喃并[2,3- d ]
嘧啶。在
硝基甲烷中进行类似反应时,发生分子内亲电环化,得到6-[[(芳基
硫烷基)甲基] -5,6-二氢
呋喃[2,3- d ]
嘧啶。