CdO nanoparticles efficiently catalyzes the condensation of aromatic aldehydes with 2-aminophenol at room temperature to afford 2-aryl benzoxazole derivatives by grinding method. The reactions proceed under heterogeneous and mild conditions to provide 2-aryl benzoxazoles in excellent yields (87-97 %) with high purity under solvent free condition. The reaction requires short time (5-23 minutes) ...

     In this study an easy, green, efficient and simple approach is reported for the synthesis of some benzothiazole-, benzimidazole- and benzoxazole-2-thiolderivatives. The proposed approach employs the reaction of corresponding aromatic amine with potassium isopropyl xanthate (Z11) in the presence of copper sulfate (CuSO4) as a catalyst under conventional heating and ultrasonic irr...

Benzoxazole is one of the biologically important heterocyclic compounds, which shows remarkable pharmacological activities. In this work, 3-methyl-1-(5-methyl-1,3-benzoxazol-2-yl)-1H-pyrazol-5-amine derivatives have been synthesized by using mild protocol under solvent free condition. Structures compounds confirmed through IR, 1H NMR, 13C NMR and Mass spectral methods. All were assessed for the...

The construction of carbon–carbon bonds by direct involvement two unactivated carbon–hydrogen bonds, without any directing group, ensures a high atom economy the entire process. Here, we describe simple protocol for Pd(II)/Cu(II)-promoted intermolecular cross-dehydrogenative coupling (CDC) 5-arylimidazoles, benzimidazoles, benzoxazole and 4,5-diphenylimidazole at their C-2 position with functio...

In this study, new benzoxazole-linked pyrrolidinone heterocyclic compounds were synthesized by an eco-efficient strategy using substituted benzylamines and 2-aminophenol under ultrasonic irradiation in the presence of a newly designed metal-free deep eutectic solvent (DES). This DES was prepared mixture urea glycine-derived ionic liquid. X-ray diffraction infrared spectroscopy employed to inves...

We report on the steady-state, picosecond and femtosecond time-resolved studies of a charge and proton transfer dye 6-amino-2-(2'-hydroxyphenyl)benzoxazole (6A-HBO) and its methylated derivative 6-amino-2-(2'-methoxyphenyl)benzoxazole (6A-MBO), in different solvents. With femtosecond resolution and comparison with the photobehaviour of 6A-MBO, we demonstrate for 6A-HBO in solution, the photopro...