4-(2-羟基苯基)-1,3,5-三嗪-2-基氰胺与叠氮化钠反应生成N-(四唑-5-基)-1,3,5-三嗪-2-胺,及其反应用烯丙基溴得到烯丙基(1,3,5-三嗪-2-基)氰酰胺。4-(2-羟基苯基)-1,3,5-三嗪-2-胺的乙酰化仅涉及氨基并形成二乙酰氨基衍生物,而酚羟基保持完整。在P 2 O 5存在下三嗪胺与2,5-二甲氧基四氢呋喃的反应得到吡咯基取代的三嗪。
Reactions of 4-oxo-1,3-benzoxazinium perchlorates with guanidines
摘要:
Condensation of 2-methyl-4-oxo-1,3-benzoxazinium perchlorate with various aromatic and heterocyclic aldehydes provided previously unknown arylvinyl- and hetarylvinyl-substituted salts whose recyclization under treatment with guanidine resulted in formerly undescribed 1,3,5-triazines. The reaction of perchlorates obtained with guanidinebenzoxazole led to the formation of bishetarylamines, with guanidinebenzimidazole formed triazinebenzimidazoles, the cyanoguanidine reacted with 4-oxo-1,3-benzoxazinium perchlorates to give cyanamides.