作者:Marcin Łuczyński、Kornelia Kubiesa、Agnieszka Kudelko
DOI:10.3390/molecules27227687
日期:——
length and terminal substituent, hydrazine hydrate, and phosphorus oxychloride. The intermediate bromine-containing 2,5-dialkyl-1,3,4-oxadiazoles were easily substituted with diisopropyl iminodiacetate, followed by hydrolysis in aqueous methanol solution giving the corresponding 1,3,4-oxadiazoles bearing carboxymethylamino substituents. The structure of all products was confirmed by conventional spectroscopic
成功地合成了一系列新的对称的 2,5-二烷基-1,3,4-恶二唑,其在末端位置含有被取代的烷基,例如溴,异丙氧基羰基甲基氨基和羧甲基氨基。开发的多步法采用了烷基链长度和末端取代基不同的市售酰氯、水合肼和三氯氧磷。中间体含溴 2,5-二烷基-1,3,4-恶二唑很容易被亚氨基二乙酸二异丙酯取代,然后在甲醇水溶液中水解,得到相应的带有羧甲基氨基取代基的 1,3,4-恶二唑。所有产品的结构均通过常规光谱方法确证,包括1 H NMR,13C NMR 和 HRMS。