P2O5–SiO2as an efficient heterogeneous catalyst for the solvent-free synthesis of 1-substituted 1H-1,2,3,4-tetrazoles under conventional and ultrasound irradiation conditions
✍ Scribed by Habibi, Davood; Nasrollahzadeh, Mahmoud; Mehrabi, Leila; Mostafaee, Samaneh
- Book ID
- 120299828
- Publisher
- Springer Vienna
- Year
- 2012
- Tongue
- English
- Weight
- 230 KB
- Volume
- 144
- Category
- Article
- ISSN
- 0026-9247
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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
## Abstract A simple, efficient and convenient one‐pot synthesis of 2,3‐dihydroquinazolin‐4(1__H__)‐one derivatives under solvent‐free and catalyst‐free conditions by the reaction of aromatic aldehydes, isatoic anhydride, and ammonium acetate was reported. The advantages of this protocol include sh