Solid-phase synthesis of aryl, heteroaryl, and sterically hindered alkyl amines using the Curtius rearrangement
作者:Satoshi Sunami、Mitsuru Ohkubo
DOI:10.1016/j.tet.2008.11.012
日期:2009.1
An efficient method for the solid-phase synthesis of aryl amines, heteroaryl amines, and sterically hindered alkyl amines has been developed. The key step in this process was the formation of resin-bound carbamates (B) by the Curtius rearrangement of aryl carboxylic acids with Wang resin providing the trapping hydroxyl group. N-Alkylation reactions of B gave secondary amines in good yield. Some biaryl
已经开发了用于固相合成芳基胺,杂芳基胺和位阻烷基胺的有效方法。该过程的关键步骤是通过芳基羧酸的Curtius重排与Wang树脂提供捕获的羟基,形成与树脂结合的氨基甲酸酯(B)。B的N-烷基化反应以高收率得到仲胺。某些联芳基胺也广泛存在于生物活性物质中,还可以通过2-碘苯胺(16)或3-(4,4,5,5-四甲基-1,3, 2-二氧杂硼环烷-2-基)苯胺(21)。所开发的方法可以用于制备包含芳基,杂芳基和空间受阻的烷基胺结构作为药效基团的文库。