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Application of silica gel-supported polyphosphoric acid (PPA/SiO2) as a reusable solid acid catalyst to the synthesis of 3-benzoylisoxazoles and isoxazolines

โœ Scribed by Ken-ichi Itoh; Tadashi Aoyama; Hiroaki Satoh; Yuki Fujii; Hiroshi Sakamaki; Toshio Takido; Mitsuo Kodomari


Book ID
113930136
Publisher
Elsevier Science
Year
2011
Tongue
French
Weight
329 KB
Volume
52
Category
Article
ISSN
0040-4039

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One-pot synthesis of 2-amino-3-cyano-4-a
โœ Abolghasem Davoodnia; Sadegh Allameh; Samineh Fazli; Niloofar Tavakoli-Hoseini ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› Versita ๐ŸŒ English โš– 255 KB

## Abstract A convenient method for the synthesis of tetrahydrobenzo[b]pyrans by a one-pot three-component cyclocondensation of dimedone, aryl aldehydes, and malononitrile in water using silica gel-supported polyphosphoric acid (PPA-SiO2) as an efficient and reusable catalyst is described. The pres