Reactivity of Hydroxy and Amino Derivatives of 2-Phenyl-1<i>H</i>-imidazoline and 2-Phenyl-1<i>H</i>-imidazole toward Isocyanates: Synthesis of Appropriate Carbamates and Ureas
作者:Patrik Pařík、Josef Jansa、Sylva Holešová、Aleš Marek、Věra Klimešová
DOI:10.1002/jhet.984
日期:2013.7
l)‐1H‐imidazoline using diethylamine in acetone. Six carbamates derived from this imidazoline were then prepared using 1.1 equiv of substituted phenyl isocyanates (substituents are H, 4‐CH3, 4‐OCH3, 4‐NO2, 4‐CN, and 3‐CF3). Finally, two carbamates were prepared from 2‐(4‐hydroxyphenyl)‐1H‐imidazole (substituents are 4‐NO2 and 4‐CN). No reactivity to imidazole ring was observed in this case. Eight derivatives
的2-(4-羟基苯基)的反应性-1 ħ咪唑啉和2-(4-羟基苯基)-1- ħ朝向取代的苯基异氰酸酯-咪唑进行了研究。当提到的咪唑啉用2.5当量的取代苯基异氰酸酯处理时,制备了三种N,O-二羧酸酰胺(取代基为H,4-NO 2和4-CH 3)。随后,制备了N,O-二乙酰化的2-(4-羟基苯基)-1 H-咪唑啉,并开发了选择性脱保护方法来制备1-乙酰基-2-(4-羟基苯基)-1 H咪唑啉在丙酮中使用二乙胺。然后使用1.1当量被取代的苯基异氰酸酯的制备从该咪唑啉衍生的六个氨基甲酸酯(取代基是H,4-CH 3,4-OCH 3,4-NO 2,4-CN,3-CF 3)。最后,由2-(4-羟苯基)-1 H-咪唑制备了两个氨基甲酸酯(取代基为4-NO 2和4-CN)。在这种情况下,未观察到与咪唑环的反应性。对八种衍生物进行了抗分枝杆菌筛选。同时,2-(2-氨基苯基)-和2-(2-羟基苯基)-1 H的反应性研