Reactions of 4H and 2H-imidazole oxides with phenyl- and methyilithium followed by oxidation afford stable nitroxyl radicals — derivatives of 2- and 3-imidazolines including otherwise inaccessible sterically hindered radicals of the latter group. An unusual reaction, the formation of 2-azabutadiene derivatives after NO elimination in the dark, has been observed for pentaphenyl- and 5-methyltetraph
4H 和
2H-咪唑氧化物与苯基和
甲基锂反应,然后氧化得到稳定的
硝酰基自由基 - 2- 和 3-
咪唑啉的衍
生物,包括后一组难以接近的空间位阻自由基。对于五苯基-和 5-甲基四苯基-3-
咪唑啉-1-氧基,观察到一个不寻常的反应,即在黑暗中消除 NO 后形成 2-氮杂
丁二烯衍
生物。