Nitration of 3-(2-furyl)-2-propenones with dinitrogen tetraoxide leads to the corresponding 3-(4-nitro-2-furyl)-2-propenones. If the furyl group contains a substituent in position 5, the nitration occurs at the side chain to afford 3-(5-R-2-furyl)-2-nitro-2-propenones.
3-(2-
呋喃基)-2-
丙烯酮用
四氧化二氮硝化产生相应的3-(4-硝基-2-
呋喃基)-2-
丙烯酮。如果
呋喃基在5位上含有取代基,则硝化发生在侧链处,得到3-(5-R-2-
呋喃基)-2-硝基-2-
丙烯酮。