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2005
Imidazole derivatives
R 0190
Room Temperature Ionic Liquid Promoted Improved and Rapid Synthesis of
Imidazoles from Aryl Aldehydes and 1,2-Diketones or α-Hydroxy31- 131 2,4,5-Triaryl
ketone. — 1,2-Diketones or α-hydroxy ketone undergo a one-pot condensation with
aromatic aldehydes and ammonium acetate in the presence of solvent and promoter
NBI to give triarylimidazoles in excellent yields in short reaction times. In all cases,
the products are precipitated on dilution of the reaction mixtures with water and isolated
by a simple filtration. Imidazoles (VII) are also formed from the corresponding diketone in same yields and reaction times. — (SIDDIQUI, S. A.; NARKHEDE, U. C.;
PALIMKAR, S. S.; DANIEL, T.; LAHOTI, R. J.; SRINIVASAN*, K. V.;
Tetrahedron 61 (2005) 14, 3539-3546; Div. Org. Chem., Natl. Chem. Lab.,
Pune 411 008, India; Eng.) — Klein
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