The structure of 2-amino-3-carbamoylchromone has been studied by 1D and 2D NMR spectroscopy. Selective hydrolysis of this compound gives 3-carbamoyl-4-hydroxycoumarin, whereas the reactions with acetic anhydride and hydrazines, 2-methyl-4H-chromeno-[2,3-d]pyrimidine-4,5(3H)-dione and 3-aminochromeno[4,3-c]pyrazol-4-ones, respectively.
通过一维和二维核磁共振光谱研究了 2-
氨基-3-
氨基甲酰基
色酮的结构。选择性
水解该化合物可得到 3-
氨基甲酰基-
4-羟基
香豆素,而与
醋酸酐和
肼反应则分别得到 2-甲基-4H-色烯并[2,3-d]
嘧啶-4,5(3H)-二酮和 3-
氨基色烯并[4,3-c]
吡唑-4-酮。