A novel alkylation procedure using MW irradiation for the synthesis of 1,2,3-trisubstituted 1,4,5,6,7,8-hexahydro-1,3-diazocinium salts from their corresponding 1,2-diaryldiazocines
作者:María A. Ramírez、Gisela M. Ortiz、Alejandra Salerno、Isabel A. Perillo、María M. Blanco
DOI:10.1016/j.tetlet.2012.01.009
日期:2012.3
In this work, we describe the synthesis of a series of 1,2,3-trisubstituted-1,4,5,6,7,8-hexahydro-1,3-diazocinium salts (1) by alkylation of the corresponding 1,2-diaryl-1,4,5,6,7,8-hexahydro-1,3-diazocines (2). Compounds 2 were obtained by ethyl polyphosphate-promoted cyclocondensation of N-aroyl-N′-arylpentamethylenediamines (3). Reaction of compounds 2 with alkyl iodides led to 1,2,3-trisubstituted
在这项工作中,我们描述了通过相应的1的烷基化反应合成一系列1,2,3-三取代的1,4,5,6,7,8-六氢-1,3-重氮鎓盐(1) 2-二芳基-1,4,5,6,7,8-六氢-1,3-重氮电影(2)。通过N-芳酰基-N'-芳基戊二胺(3)的乙基多磷酸酯的环缩合反应获得化合物2。化合物2与烷基碘的反应生成1,2,3-三取代的1,4,5,6,7,8-六氢-1,3-重氮碘鎓碘化物(1),一个新的环状am盐家族。使用DCM–DMSO(10:1)的混合物作为溶剂可获得最佳的烷基化收率。当使用微波辐射时,化合物3的环缩合反应和2与烷基卤化物的反应两者的反应时间都大大缩短。