One-pot synthesis of dihydropyrimidones using nano silica as an efficient and reusable catalyst Improved protocol conditions for the Biginelli reaction
عنوان مقاله: One-pot synthesis of dihydropyrimidones using nano silica as an efficient and reusable catalyst Improved protocol conditions for the Biginelli reaction
شناسه ملی مقاله: NCANPAS01_039
منتشر شده در همایش ملی کاربرد نانوتکنولوژی در علوم محض و کاربردی در سال 1388
شناسه ملی مقاله: NCANPAS01_039
منتشر شده در همایش ملی کاربرد نانوتکنولوژی در علوم محض و کاربردی در سال 1388
مشخصات نویسندگان مقاله:
Keivan Ghodrati - Chemistry Department, Faculty of BasicScience, Islamic Azad University, Kermanshah, Iran
Azita Farokhi
Changiz Karami
Maryam Goodarzi
خلاصه مقاله:
Keivan Ghodrati - Chemistry Department, Faculty of BasicScience, Islamic Azad University, Kermanshah, Iran
Azita Farokhi
Changiz Karami
Maryam Goodarzi
An efficient synthesis of 3,4 3,4-dihydropyrimidinones or thiones (DHPMs) is described, using nano silica SiO2 for the first time as the catalyst from an aldehyde β-keto ester and urea or thiourea in acetonitrile. Compared to the classical Biginelli reaction conditions, this method consistently has the advantage of excellent yields, mild reaction conditions, ease of workup, survival of different functional groups, and short reaction times.
کلمات کلیدی: Dihydropyrimidinones or thiones (DHPMs); nano Silica jel; Biginelli reaction; Multi component reactions (MCR)
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/116752/