Résumé                                                An efficient l-proline-accelerated synthesis of 9-substituted-2,3,4,9-tetrahydro-1H-xanthen-1-one derivatives has been accomplished via one-pot condensation of dimedone or 1,3-cyclohexanedione with substituted salicylaldehydes under mild reaction conditions. This protocol demonstrates several notable advantages, including operational simplicity, short reaction times, environmentally friendly conditions, no necessity of extraction and chromatographic purification steps, and high yields of the target products.                                                                  Supplementary Materials:                               Supplementary material for this article is supplied as a separate file:                                                                                                        mmc1.doc
                                    摘要
通过将二酮或1,3-
环己烷二酮与取代的
水杨 aldehyde 在温和反应条件下进行一锅缩合,实现了高效的 l-脯
氨酸加速合成 9-取代-2,3,4,9-四氢-1H-
香豆素-1-酮衍
生物。该方案显示出若干显著优势,包括操作简单、反应时间短、环保条件、不需要提取和色谱纯化步骤以及高产率的目标产品。
补充材料:
本文章的补充材料作为单独文件提供:mmc1.doc