Ultrasound-promoted greener synthesis of aryl-14-H-dibenzo[a,j]xanthenes catalyzed by NH4H2PO4/SiO2 in water
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چکیده
منابع مشابه
Efficient one-pot synthesis of 14-aryl-14 -dibenzo[ , ]xanthene derivatives promoted by niobium pentachloride
A simple and efficient procedure for the synthesis of 14-aryl-14H-dibenzo[a,j ]xanthene derivatives through one-pot condensation of 2-naphthol with aryl aldehydes in the presence of niobium pentachloride is described. The reactions were carried out using 25 mole % of NbCl5, at ambient temperature, and in acceptable reaction times, affording excellent yields of the products. c © 2014 Institute o...
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Article history: Received March 27, 2013 Received in Revised form August 27, 2013 Accepted 14 September 2013 Available online 14 September 2013 A green and efficient method for the synthesis of (4 or 5)-aryl-2-aryloyl-(1H)-imidazoles via self-condensation reaction of arylglyoxal hydrates in the presence of ammonium acetate using water as solvent under ultrasonic irradiation was reported. The re...
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The synthesis of aryl amides via the reactions of carboxylic acids and isocyanides in methanol was carried out in 78-95% yields under ultrasound irradiation. The method has wide applicability, and the protocol is mild, fast and efficient compared to the existing methods based on silent conditions.
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15 صفحه اولultrasound-promoted synthesis of aryl amides from isocyanides and carboxylic acids under ambient conditions
the synthesis of aryl amides via the reactions of carboxylic acids and isocyanides in methanol was carried out in 78-95% yields under ultrasound irradiation. the method has wide applicability, and the protocol is mild, fast and efficient compared to the existing methods based on silent conditions.
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ژورنال
عنوان ژورنال: Ultrasonics Sonochemistry
سال: 2009
ISSN: 1350-4177
DOI: 10.1016/j.ultsonch.2008.05.010