(Carboxy-3-oxopropylamino)-3-propylsilylcellulose as a novel organocatalyst for the synthesis of coumarin derivatives under solvent-free conditions
عنوان مقاله: (Carboxy-3-oxopropylamino)-3-propylsilylcellulose as a novel organocatalyst for the synthesis of coumarin derivatives under solvent-free conditions
شناسه ملی مقاله: JR_ICC-4-3_007
منتشر شده در شماره 3 دوره 4 فصل در سال 1394
شناسه ملی مقاله: JR_ICC-4-3_007
منتشر شده در شماره 3 دوره 4 فصل در سال 1394
مشخصات نویسندگان مقاله:
Mehri Salimi - Department of Chemistry, College of Sciences, University of Birjand, P. O. Box ۹۷۱۷۵-۶۱۵, Birjand, Iran
خلاصه مقاله:
Mehri Salimi - Department of Chemistry, College of Sciences, University of Birjand, P. O. Box ۹۷۱۷۵-۶۱۵, Birjand, Iran
In this research, (Carboxy-3-oxopropylamino)-3-propylsilylcellulose (COPAPSC) as an organocatalyst, has been synthesized by grafting of succinic anhydride on the NH2-modified cellulose (cellulose functionalized with 3- aminopropyltriethoxysilane). The –CO2H group-functionalized cellulose (COPAPSC) is used as a catalyst for the synthesis of coumarin derivatives from the reaction of phenolic substrate and β- Keto-esters under solvent-free conditions. The results showed that the yield of products is between 85-94%. The advantages of this reaction include simple work-up, short reaction time, excellent yields as well as easily separation of catalyst. The catalyst can be reused several times in subsequent reactions without any decreasing in the catalyst reactivity.
کلمات کلیدی: (Carboxy-3-oxopropylamino)-3-propylsilylcellulose, Solvent-free condition, Phenolic substrate, β- Keto-ester
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/931371/