A cascade reaction of azolopyrimidines. Synthesis of unusual indole and azaindole derivatives
作者:María Morón、Carolina Burgos、Julio Alvarez-Builla、Antonio Salgado、Marta E. G. Mosquera、Juan J. Vaquero
DOI:10.1039/c2cc34539k
日期:——
amide formation occurs but it is followed by an unexpected cascade process involving attack of the amine to the pyrimidine ring, opening of the pyrimidine ring, loss of the bromine substituent and competitive cyclizations to afford unusual imidazolidene substituted indoles and azaindoles.
描述了溴取代的吡啶并[3',2':4,5]吡咯并-[1,2-c]嘧啶和嘧啶并[1,6-a]吲哚甲基羧酸盐与伯胺的反应。发生了预期的酰胺形成,但是随后发生了意想不到的级联过程,该过程涉及胺攻击嘧啶环,嘧啶环打开,溴取代基损失以及竞争性环化反应,从而生成了不寻常的咪唑烷取代的吲哚和氮杂吲哚。