A convenient and general method was established to append tri-, hexa-, and nonadentate ligands about an aromatic or aliphatic core. This approach allows a variety of commercially available carboxylic acids to be transformed to their N-tris(hydroxymethyl)methylcarboxamides in one step. The selective activation of the acid functionality to form the polyhydroxylated dendritic cores has been achieved using the acyl transfer agent N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline (EEDQ).
我们建立了一种便捷而通用的方法,用于在芳香族或脂肪族核心上附加三齿、六齿和非齿
配体。通过这种方法,各种市售
羧酸可一步转化为 N-三(羟甲基)甲基羧酰胺。通过使用酰基转移剂 N-乙氧羰基-2-乙氧基-1,2-二氢
喹啉(EEDQ),可以选择性地活化酸官能团,形成多羟基树枝状核。