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PPA‐SiO 2 as a Heterogeneous Catalyst for Efficient Synthesis of 2‐Substituted‐1,2,3,4‐tetrahydro‐4‐quinazolinones under Solvent‐free Conditions
Author(s) -
Shaterian Hamid Reza,
Oveisi Ali Reza
Publication year - 2009
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201090018
Subject(s) - chemistry , catalysis , aryl , quinazolinone , solvent , solid acid , combinatorial chemistry , organic chemistry , reaction conditions , heterogeneous catalysis , alkyl
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 excellent yields, short reaction time, simple experimental and work‐up procedures. The heterogeneous catalyst could be recovered and recycled for several times without any loss of its activity.