中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-[(4-苄氧基苯基氨基)-亚甲基]-丙二酸二乙酯 | diethyl 2-(((4-(benzyloxy)phenyl)amino)methylene)malonate | 35957-44-9 | C21H23NO5 | 369.417 |
—— | 2-[(4-benzoyloxyphenylamino)methylene]malonic acid diethyl ester | 1222062-53-4 | C21H21NO6 | 383.401 |
Diethyl 2-[(2-hydroxyanilino)methylidene]malonate, (I), and diethyl 2-[(4-hydroxyanilino)methylidene]malonate, (II), both C14H17NO5, crystallize in centrosymmetric orthorhombic and monoclinic crystal systems, respectively. Compound (I) resides on a crystallographic mirror plane and displays bifurcated intramolecular hydrogen bonding, as well as intermolecular hydrogen bonding due to the position of the hydroxy group. Compound (II) has a single intramolecular N—H...O hydrogen bond. Infinite one-dimensional head-to-tail chains formed by O—H...O hydrogen bonding are present in both structures. The molecular packing is mainly influenced by the intermolecular O—H...O interactions. Additionally, C—H...O interactions crosslinking the chains are found in (II).