respectively. 3-(5-Nitro-2-furyl)acrylamide oxime (III) was prepared by the usual method from I and hydroxylamine. The treatment of III with benzaldehyde and acid anhydrides or chlorides afforded 3-[2-(5-nitro-2-furyl)vinyl]-5-phenyl-4,5-dihydro-1,2,4-oxadiazoline (IV) and O-acyl-3-(5-nitro-2-furyl)acrylamide oximes (IIIa—IIIe) respectively. The O-acyl-amide oximes were found to cyclize to 3-[2-(5-nitro
在我们之前关于合成 5-硝基-2-
呋喃腈的论文中,制备了 2-(5-硝基-2-
呋喃基)
乙烯基-
1,2,4-恶二唑和-
1,2,3-三唑来自 3-(5-nitro-2-furyl)
丙烯腈 (I)。当 I 用
乙醚中的
重氮甲烷处理时,得到 4-[2-(5-硝基-2-
呋喃基)
乙烯基]-
1,2,3-三唑 (II)。当分别用
乙酸酐处理和使用曼尼希反应时,II 得到 N-乙酰基 (IIa) 和 N-吗啉代甲基 (IIb) 化合物。3-(5-硝基-2-
呋喃基)
丙烯酰胺
肟(III)通过常用方法由I和
羟胺制备。III 用
苯甲醛和酸酐或
氯化物处理得到 3-[2-(5-nitro-2-furyl)vinyl]-5-phenyl-4,5-dihydro-1,2,4-oxadiazoline (IV) 和O-酰基-3-(5-硝基-2-
呋喃基)
丙烯酰胺
肟(IIIa-IIIe)分别。