Reagent for Synthesis of Secondary Amines by Two Consecutive N-Alkylations and Its Application to Orthogonally Protected Spermidine
作者:Leif Grehn、Ulf Ragnarsson
DOI:10.1021/jo020205l
日期:2002.9.1
A novel reagent, tert-butyl 2-naphthalenesulfonylcarbamate, has been designed to allow the stepwise synthesis of secondary aliphatic amines by two consecutive N-alkylations with intermediate Boc-cleavage and final desulfonylation under mild and experimentally convenient conditions. Its application was demonstrated to make an orthogonally protected spermidine derivative, suitable for further selective
设计了一种新颖的试剂2-萘磺酰基氨基甲酸叔丁酯,可以在温和和实验方便的条件下,通过两次连续的N-烷基化,中间的Boc裂解和最终的脱磺酰化逐步合成仲脂肪族胺。证明其应用可制备正交保护的亚精胺衍生物,适用于进一步的选择性修饰。每个步骤,包括最终裂解2-萘磺酰基以提供仲胺氮,都以高收率进行。