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Rate Accelerations in AgNO۳ Mediated Transesterification of β –Keto esters

عنوان مقاله: Rate Accelerations in AgNO۳ Mediated Transesterification of β –Keto esters
شناسه ملی مقاله: JR_CHM-2-2_001
منتشر شده در در سال 1397
مشخصات نویسندگان مقاله:

Thummala Raja Mani - Department of Chemistry, Osmania University, Telangana State, Hyderabad ۵۰۰۰۰۷, India
Yelike Hemanth Sriram - Department of Chemistry, Osmania University, Telangana State, Hyderabad ۵۰۰۰۰۷, India
Kuthati Bhaskar - Department of Chemistry, Osmania University, Telangana State, Hyderabad ۵۰۰۰۰۷, India
Addula Kiran Kumar - Department of Chemistry, Osmania University, Telangana State, Hyderabad ۵۰۰۰۰۷, India
Karunakar Rao kudle - Department of Bio-Chemistry, Osmania University, Telangana State, Hyderabad ۵۰۰۰۰۷, India

خلاصه مقاله:
In the present study, AgNO۳ is employed as an effective catalyst for transesterification of β-keto esters with various alcohols under conventional and non-conventional conditions. The alcohols are easily converted into corresponding acetates in very good yields and less reaction times. However, a decrease in reaction times as well as moderate yields were observed when performed under non-conventional conditions such as Sonication and Microwave irradiation. Contrary to many other silver salts catalysts, AgNO۳ has shown remarkable levels of activity and stability towards transesterification reaction. The tendency in reaction rates was found to be MWAS (۳-۶ min) <<< Sonication (۳۰-۴۵ min) <<< Conventional (۸-۱۲ hrs).

کلمات کلیدی:
Transesterification, β-keto esters, Alcohols, AgNO۳, conventional, non-conventional

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1748785/