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Nano BF3·SiO2: A green heterogeneous solid acid for synthesis of formazan dyes under solvent-free condition

✍ Scribed by Bamoniri, Abdolhamid; Mirjalili, Bi Bi Fatemeh; Moshtael-Arani, Naimeh


Book ID
125417162
Publisher
Elsevier Science
Year
2014
Tongue
English
Weight
686 KB
Volume
393
Category
Article
ISSN
1381-1169

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## Abstract Silica‐supported polyphosphoric acid (PPA‐SiO~2~) catalyzed efficiently the reaction of anthranilamide with aryl aldehydes or ketones under solvent‐free conditions to afford the corresponding 1,2,3,4‐tetrahydro‐4‐quinazolinone derivatives. This work consistently has the advantages of ex