A straightforward preparation of primary alkyl triflates and their utility in the synthesis of derivatives of ethidium
作者:Steven A. Ross、Marguerite Pitié、Bernard Meunier
DOI:10.1039/a908389h
日期:——
The reaction of primary alcohols with trifluoromethanesulfonic anhydride in the presence of poly(4-vinylpyridine) [or poly(2,6-di-tert-butyl-4-vinylpyridine)] allows the isolation of the corresponding alkyl triflates in good yields. The quaternisation of 3,8-bis(ethoxycarbonylamino)-6-phenylphenanthridine (1) using these alkyl triflates was found to proceed smoothly at room temperature in nitrobenzene
伯醇与三氟甲磺酸酐在聚(4-乙烯基吡啶)的存在下[或聚(2,6-二-反应叔丁基-4-乙烯基吡啶)]允许以良好的收率相应的烷基三氟甲磺酸酯的分离。发现使用这些烷基三氟甲磺酸酯对3,8-双(乙氧基羰基氨基)-6-苯基菲啶(1)的季铵化在室温下在硝基苯或氯苯中可顺利进行。已经发现,与先前报道的浓硫酸的使用相比,使用浓氢溴酸对这些季化合物进行脱保护是一种更有用的方法。据报道合成了新的乙啶衍生物3,8-二氨基-5-(5-氨基戊基)-6-苯基菲啶鎓溴化物(12)。