A facile and practical p-Toluenesulfonic acid catalyzed route to dicoumarols containing an Aroyl group
نویسندگان
چکیده
منابع مشابه
A Facile and Environmental Friendly Method for C=N Bond Cleavage of Imines Using p-Toluenesulfonic Acid in Solid State
A simple, efficient and clean procedure has been developed for the cleavage of imines C=N bond. Deprotection of imines to their parent carbonyl and amine compounds was achieved using p-toluenesulfonic acid in the solid state condition at 25-45 ˚C. The salient features of this methodology are shorter reaction times, cheap processing, high yields of product and easy availability of the catalyst. ...
متن کاملHydrolysis of Proteins with p-Toluenesulfonic Acid
A new procedure for analyses for tryptophan in proteins and glycoproteins is described. The method utilizes ptoluenesulfonic acid as the catalyst for hydrolysis and the amino acid analyzer for the quantitative estimation of tryptophan. The hydrolysis of proteins is carried out in 3 N p-toluenesulfonic acid containing 0.2 % 3-(Z-aminoethyl)indole in evacuated sealed tubes at 110” for 22, 48, and...
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A simple, rapid and efficient practical method for one-pot synthesis of α-amino nitriles has been achieved by a threecomponent condensation of carbonyl compounds, amines and trimethylsilyl cyanide in the presence of p-toluenesulfonic acid (p-TsOH) as a catalyst at ambient temperature. Operational simplicity, economic consideration, high yield, short reaction time and low toxicity are the key fe...
متن کاملa facile and environmental friendly method for c=n bond cleavage of imines using p-toluenesulfonic acid in solid state
a simple, efficient and clean procedure has been developed for the cleavage of imines c=n bond. deprotection of imines to their parent carbonyl and amine compounds was achieved using p-toluenesulfonic acid in the solid state condition at 25-45 ˚c. the salient features of this methodology are shorter reaction times, cheap processing, high yields of product and easy availability of the catalyst. ...
متن کاملA facile route to flavone and neoflavone backbones via a regioselective palladium catalyzed oxidative Heck reaction.
A straightforward and atom-economical base-free palladium-catalyzed regioselective direct arylation of coumarins and chromenones is devised. This protocol is compatible with a wide variety of electron-donating and -withdrawing substituents and allows construction of various biologically important flavone and neoflavone backbones.
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ژورنال
عنوان ژورنال: South African Journal of Chemistry
سال: 2015
ISSN: 1996-840X
DOI: 10.17159/0379-4350/2015/v68a8