作者:Wang, Xiao-Hong、Liu, Xuan、Xue, Ya-Wen、Wei, Xiao-Hong、Wang, Yan-Bin、Su, Qiong
DOI:10.1021/acs.joc.4c00454
日期:——
An effective multicomponent reaction for the synthesis of 4-phosphorylated 4H-chromenes via a tandem phosphorylation/alkylation/cyclization/dehydration sequence with water as the only byproduct was developed. Extensive mechanistic investigations involving in situ NMR experiments, time control experiments, and in situ HRMS experiment allowed us to elucidate the order of each subreaction to arrive at
开发了一种有效的多组分反应,通过串联磷酸化/烷基化/环化/脱水顺序合成 4-磷酸化 4 H-色烯,水作为唯一的副产物。涉及原位核磁共振实验、时间控制实验和原位 HRMS 实验的广泛机理研究使我们能够阐明每个子反应的顺序,从而全面了解这种多组分反应的基本机制。机理数据证实该反应从磷醛醇消除开始,然后添加酮烯醇化物、分子间烷基化、分子内环化和在酸性条件下脱水。