Silica Sodium Carbonate as an Effective and Reusable Catalyst for the Three-Component Synthesis of Pyrano Coumarins
عنوان مقاله: Silica Sodium Carbonate as an Effective and Reusable Catalyst for the Three-Component Synthesis of Pyrano Coumarins
شناسه ملی مقاله: JR_ORGC-4-2_007
منتشر شده در در سال 1397
شناسه ملی مقاله: JR_ORGC-4-2_007
منتشر شده در در سال 1397
مشخصات نویسندگان مقاله:
Mahnaz Farahi - Department of Chemistry, Yasouj University, Yasouj, Iran
Mahboobeh Abdipour - Department of Chemistry, Yasouj University, Yasouj, Iran
خلاصه مقاله:
Mahnaz Farahi - Department of Chemistry, Yasouj University, Yasouj, Iran
Mahboobeh Abdipour - Department of Chemistry, Yasouj University, Yasouj, Iran
Silica sodium carbonate (SSC) has been used as a valuable silica-supported catalyst for the preparation of a range of known and novel pyrano coumarins via the three-component reactions of aryl aldehydes, active methylene compound (malononitrile or ethyl cyanoacetate), and hydroxycoumarin (۵,۷-dihydroxy-۴-substituted coumarins or ۴-hydroxycoumarin). The heterogeneous catalyst showed much the same efficiency when employed in following reaction runs.
کلمات کلیدی: Pyrano coumarins, ۵, ۷-Dihydroxy-۴-substituted coumarins, ۴-Hydroxycoumarin
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1766220/