Solvent and catalyst free efficient chemoselective synthesis of 1,1-diacetate under visible light irradiation

One of the synthetic intermediates is used in many organic transformations. A method for highly efficient synthesis of 1,1-diacetate (3a-j) from mixture of various substituted benzaldehydes and acetic anhydride under solvent- and catalyst free using visible light irradiation (150 W tungsten lamp)has been developed. The main advantages of this protocol includes shorter reaction time, eco-friendly, mild reaction condition, easy work-up procedures, high yields of products, are the attractive features of the present methodology. All synthesized 3a-j compounds were characterized by IR, 1H NMR and mass spectral analysis

Solvent and catalyst free efficient chemoselective synthesis of 1,1-diacetate under visible light irradiation

1184-1187One of the synthetic intermediates is used in many organic transformations. A method for highly efficient synthesis of 1,1-diacetate (3a-j) from mixture of various substituted benzaldehydes and acetic anhydride under solvent- and catalyst free using visible light irradiation (150 W tungsten lamp) has been developed. The main advantages of this protocol includes shorter reaction time, eco-friendly, mild reaction condition, easy work-up procedures, high yields of products, are the attractive features of the present methodology. All synthesized 3a-j compounds were characterized by IR, 1H NMR and mass spectral analysis

ZnO as an Efficient and Inexpensive Catalyst for One Pot Synthesis of 2, 4, 5 -Triphenyl-1H - imidazole Derivatives at Room Temperature

An improved and rapid one pot synthesis of 2,4,6-triphenyl-1H-imidazoles on condensation with benzil, aromatic aldehyde and NH4OAc has been carried out using ZnO as an efficient and inexpensive catalyst in high yield at room temperature. The short reaction time, good yields (60-93%), environmental friendly procedure, mild reaction condition and convenient operation are important advantage of these synthetic methods