procedure has been developed for the construction of pyrrolo[1,2‐a]pyrimidines via the three‐component domino reaction of 5‐aminopyrazoles, acetylenedicarboxylates and malononitrile under catalyst‐free, microwave irradiation conditions. The key step in this transformation is the NN bond cleavage reaction of the 5‐aminopyrazole substrate, which has been reported in this context for the first time in this study
已经开发了一种简单有效的一锅法,用于在无催化剂的微波辐射条件下,通过5-
氨基
吡唑,
乙炔基
羧酸盐和
丙二腈的三组分多米诺反应来构建
吡咯并[1,2- a ]
嘧啶。该转化过程的关键步骤是5-
氨基
吡唑底物的NN键裂解反应,这是本研究首次在此背景下报道。该方案的优点包括容易获得的起始原料,较短的反应时间和良好的区域选择性。