Microwave-Assisted Synthesis of 2-Substituted 4-Biarylyl-1,3-thiazoles by Carbon-Carbon Cross-Coupling in Water
作者:Kamal Dawood、Moteaa El-Deftar
DOI:10.1055/s-0029-1218662
日期:2010.3
Suzuki-Miyaura and Heck-Mizoroki C-C cross-coupling reactions of 4-(halophenyl)-1,3-thiazoles with aryl(hetaryl)boronic acids or olefins, respectively, were investigated by using a catalytically active benzimidazole-based palladium(II) complex under both thermal and microwave heating conditions in water. The factors affecting the optimization of such reactions were evaluated. palladium - homogeneous
I2/CuO-catalyzed tandem cyclization strategy for one-pot synthesis of substituted 2-aminothiozole from easily available aromatic ketones/α,β-unsaturated ketones and thiourea
A concise and efficient one-pot process from easily available methyl ketones/unsaturated methyl ketones and thiourea was developed for the synthesis of 2-aminothiazoles under the media of I2/CuO. The method can highly stereoselectivity obtain the E-isomers of 4-ethenyl-2-aminothiazoles (5a–f). All these target molecules were characterized by NMR, HRMS and IR spectra. Furthermore, the target compounds
A convenient and efficient method is described for the synthesis of 2-aminothiazoles by one-pot reaction of ketone and thiourea using chitosan nanoparticles under mild condition. Nanochitosan was used as a biodegradable and green catalyst for this reaction in satisfactory yields. The attractive advantages of the present process include easy isolation of products, milder and cleaner conditions, higher
Green Synthesis of Thiazole Derivatives using Multi-component Reaction of Aldehydes, Isothiocyanate and Alkyl Bromides: Investigation of Antioxidant and Antimicrobial Activity
作者:Naghmeh Faal Hamedani、Leila Azad、Shahin Shafiee、Annataj Noushin
DOI:10.2174/1386207323666200709165325
日期:2021.1.13
aldehydes, benzoylisothiocyanate and alkyl bromides in the presence of ammonium acetate, sodium cyanide and a catalytic amount of KF/Clinoptilolite nanoparticles (KF/CP NPs) in the water at 100oC was investigated. Materials and Methods: In these reactions, thiazole derivatives were produced in good to excellent yields and short time. Also, the antioxidant activity was studied for some newly synthesized