Three-component Reaction Of Arylglyoxals Research Articles

An efficient synthesis of polyfunctionalized pyrroles by three-component reaction of arylglyoxals, Meldrum’s acid and ethyl 2-chloro-3-(arylamino)but-2-enoates

An efficient synthesis of polyfunctionalized pyrroles by three-component reaction of arylglyoxals, Meldrum’s acid and ethyl 2-chloro-3-(arylamino)but-2-enoates

One-pot three-component reaction of arylglyoxals with acetylthiourea and Meldrum’s acid or barbituric acid for synthesis of new 2-acetamido-4-arylthiazol-5-yl derivatives

ABSTRACTAn efficient method for the synthesis of 2-acetamido-4-arylthiazol-5-yl derivatives via a novel one-pot three-component reaction of arylglyoxals, 1,3-dicarbonyl compounds such as Meldrum’s acid or barbituric acid, and acetylthiourea in ethanol is reported.

Synthesis of pyrazolopyridine and pyrazoloquinoline derivatives by one-pot, three-component reactions of arylglyoxals, 3-methyl-1-aryl-1H-pyrazol-5-amines and cyclic 1,3-dicarbonyl compounds in the presence of tetrapropylammonium bromide

Abstract Pyrazolopyridine and pyrazoloquinoline derivatives were obtained by a one-pot, three-component reaction of arylglyoxals, 3-methyl-1-aryl-1H-pyrazol-5-amines and cyclic 1,3-dicarbonyl compounds in the presence of tetrapropylammonium bromide at 80°C in water through Knoevenagel and Micheal reactions, followed by intramolecular condensation, unexpected dearoylation and oxidation. Mild reaction conditions, high yields, simplicity of work up procedure, starting materials availability and clean product formation are some of the main advantages of this synthetic strategy.

Synthesis of a new series of benzo[d]imidazo[2,1-b]thiazole-1-ium hydroxides by a one-pot, three-component reaction in water

Herein, we report the green synthesis of a new series of benzo[d]imidazo[2,1-b]thiazole-1-ium hydroxide derivatives by a one-pot, three-component reaction of arylglyoxals, quinoline-2,4-diol, and 2-aminobenzothiazole in the presence of TEA/AcOH (1:2) as a catalyst at 50 °C in water, which appears as a green solvent. The structures of all 12 examples were confirmed by 1H NMR, 13C NMR, mass spectral data, and FT-IR. This procedure provides mild reaction conditions, using green solvent, high yields, easy work-up and simple isolation of structurally divers tricyclic benzo[d]imidazo[2,1-b]thiazole derivatives which may have biological and pharmaceutical activities.

One-pot, three-component synthesis of pyrrolo[2,3-d]pyrimidine derivatives

A green approach for the synthesis of polyfunctionalized pyrrolo[2,3-d]pyrimidine derivatives was successfully achieved by a one-pot, three-component reaction of arylglyoxals, 6-amino-1,3-dimethyluracil and barbituric acid derivatives in the presence of tetra-n-butylammonium bromide (TBAB) (5 mol%) as the catalyst in ethanol at 50 °C. This protocol has many advantages such as high yields (73-95%), green and simple procedure, short reaction times, easy work-up, mild reaction conditions and general applicability.

ChemInform Abstract: Microwave‐Assisted Synthesis of Novel 2,3‐Disubstituted Imidazo[1,2‐a]pyridines via One‐Pot Three Component Reactions.

An expeditious one-pot, metal-free, three-component reaction of arylglyoxals, cyclic 1,3-dicarbonyls and 2-aminopyridines in the presence of molecular iodine under microwave irradiation is reported. A wide variety of 2,3-disubstituted imidazo[1,2-a]pyridine derivatives can be synthesized in good to very good yields using this methodology. The salient features of this methodology are: metal-free, short reaction time, good yields, use of microwave heating and no harmful by-products.

Microwave-assisted synthesis of novel 2,3-disubstituted imidazo[1,2-a]pyridines via one-pot three component reactions

An expeditious one-pot, metal-free, three-component reaction of arylglyoxals, cyclic 1,3-dicarbonyls and 2-aminopyridines in the presence of molecular iodine under microwave irradiation is reported.

ChemInform Abstract: A Convenient and Mild Synthesis of New 2‐Aryl‐3‐hydroxy‐6,7‐dihydro‐1H‐indol‐4(5H)‐ones via a One‐Pot, Three‐Component Reaction in Water.

Abstract A simple and convenient synthesis of 2-aryl-3-hydroxy-6,7-dihydro-1 H -indol-4(5 H )-ones is achieved in high yields via the one-pot, three-component reaction of arylglyoxals, 1,3-cyclohexanedione, and ammonium acetate in water under reflux conditions.

A convenient and mild synthesis of new 2-aryl-3-hydroxy-6,7-dihydro-1H-indol-4(5H)-ones via a one-pot, three-component reaction in water

A simple and convenient synthesis of 2-aryl-3-hydroxy-6,7-dihydro-1H-indol-4(5H)-ones is achieved in high yields via the one-pot, three-component reaction of arylglyoxals, 1,3-cyclohexanedione, and ammonium acetate in water under reflux conditions.