novel ethyl 2-oxo/thio-4-aryl-6-(arylsulfonylmethyl)-1,2,3,4-tetrahydropyrimidine-5-carboxylates has been synthesized regioselectively by the Biginelli reaction of ethyl 3-oxo-4-(arylsulfonyl)butanoate, aromatic aldehyde and urea/thiourea under microwave irradiation and solvent- and catalyst-free conditions.
通过3-氧代-4-乙基乙基的Biginelli反应选择性地合成了一系列新型的2-氧代/
硫代-4-芳基-6-(芳基磺酰基甲基)-1,2,3,4-四氢
嘧啶-5-
羧酸乙酯。 (芳基磺酰基)
丁酸酯,芳族醛和
脲/
硫脲在微波辐射下以及无溶剂和无催化剂的条件下。