An efficient sequential multi-component method for the synthesis of N-arylpyrrole-3-carbaldehydes has been developed. This reaction involved a proline-catalyzed direct Mannich reaction-cyclization sequence between succinaldehyde and in situ generated Ar/HetAr/indolyl-imines, followed by IBX-mediated oxidative aromatization in one-pot operation. The practical utility of this procedure is shown at gram-scale
开发了一种有效的连续多组分合成N-芳基
吡咯-3-甲醛的方法。该反应涉及
琥珀醛和原位生成的 Ar/HetAr/
吲哚基
亚胺之间脯
氨酸催化的直接曼尼希反应环化序列,然后在一锅操作中进行 IBX 介导的氧化芳构化。该方法的实用性以克级显示,并合成了多种
生物活性稠合杂环支架,例如
吡咯并
喹啉、
吡咯并恶二唑、二氢
吡咯并
喹啉和
吡咯并
菲啶。