10-Phenanthrolinium N-ylides react with ethyl cyanoacetate and aromatic aldehydes via a domino-Knoevenagel cyclization to produce a new class of tetrahydropyrrolo [1,2-a][1,10] phenanthrolines with four diastereoisomeric centers as stable helical compounds in a simple, mild, and efficient protocol in excellent yields. Explicit structural elucidation of compounds was accomplished by single-crystal x-ray
摘要 1,10-Phenanthrolinium N-ylides 与
氰乙酸乙酯和芳香醛通过多米诺-Knoevenagel 环化反应生成一类新的
四氢吡咯并 [1,2-a][1,10]
菲咯啉,其具有四个非对映异构中心作为稳定的螺旋化合物以简单、温和、高效的方案获得出色的产量。化合物的明确结构解析是通过单晶 X 射线衍射完成的。图形概要