Synthesis of new pyrazoles, oxadiazoles, triazoles, pyrrolotriazines, and pyrrolotriazepines as potential cytotoxic agents
作者:Ameen Ali Abu‐Hashem
DOI:10.1002/jhet.4216
日期:2021.3
conditions to afford the corresponding pyrazoles (2–7), also, treatment of butanehydrazide (1) with electrophilic reagents as triethylorthoformate, dimethylformamide‐dimethylacetal, acetic anhydride, and carbon disulfide to give 1,3,4‐oxadiazoles (8,10,11) and N′‐acetyl‐butanehydrazide (9). Reacted of butanehydrazide (1) with potassium thiocyanate gave 1,2,4‐triazoles (12). Similarly, treatment of (1) with
4-氧代-4- phenylbutanehydrazide (1)具有许多活性亚甲基的试剂如乙酰丙酮,丙二酸二乙酯,乙酰乙酸乙酯,氰基乙酸乙酯,苯甲酰基乙腈,丙二腈和整齐的条件,得到相应的吡唑类下进行反应(2-7) ,另外,治疗的丁酰肼(1)与亲电试剂如原甲酸三乙酯,二甲基甲酰胺-二甲基乙缩醛,乙酸酐和二硫化碳,得到1,3,4-恶二唑(8,10,11)和N'-乙酰基-丁酰肼(9)。丁酰肼(1)与硫氰酸钾反应生成1,2,4-三唑(12)。同样,对(1)的处理用氯乙酰胺制得1,2,4-三嗪酮(13)。吡咯并三嗪酮(14)通过(13)的环化获得。此外,丁酰肼(1)被用作合成新席夫碱(N '-(4-亚苄基)-苯基丁烷酰肼(15a-c))的起始原料,用于制备新化合物如1,2,4-三氮杂吡啶酮(16a-c),吡咯并三氮杂吡啶酮(17a-c),1,2,4-三嗪(18a-c)和吡咯并三嗪(19a-c)通过