Gold-Catalyzed Addition–<i>N</i>-Boc Cleavage–Cyclization of <i>N</i>,<i>O</i>-Acetal with Ynamides for Construction of 6-(<i>tert</i>-Butyldimethylsilyl)oxy-tetrahydropyrrolo[1,2-<i>c</i>][1,3]oxazin-1-ones
作者:Yan-Xue Zhang、Ling-Yan Chen、Jian-Ting Sun、Chang-Mei Si、Bang-Guo Wei
DOI:10.1021/acs.joc.0c01776
日期:2020.10.2
A highly efficient gold-catalyzed approach between N,Oacetals and ynamides for the construction of 6-(tert-butyldimethylsilyl)oxytetrahydropyrrolo[1,2-c][1,3]oxazin-1-ones was developed. This reaction tolerated a wide range of substituted N,O-acetals and TsN-substituted ynamides, leading to novel heterocycles in moderate to good yields and with excellent diastereoselectivities (dr > 99:1).