Propane-1,2,3-triyl tris(hydrogen sulfate): A mild and efficient recyclable catalyst for the synthesis of biscoumarin derivatives in water and solvent-free conditions
摘要:
A simple, efficient, and ecofriendly procedure has been developed using propane-1,2,3-triyl tris(hydrogen sulfate) as a catalyst for the synthesis of biscoumarin derivatives in water and solvent-free conditions. The significant features of the present protocol are simplicity, environmentally benign, high yields, no chromatographic separation, and recyclability of the catalyst. (C) 2013 Ramin Rezaei. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
Incredible Role of Glycerol in Multicomponent Synthesis of 2,3-Dihydroquinazoline-4(1H)-ones and 1-Amidoalkyl-2-naphthols
作者:Maryam Hajjami、Fariba Bakhti、Elahe Ghiasbeygi
DOI:10.5562/cca2637
日期:——
An efficient and green synthesis of 1-amidoalkyl-2-naphthols via one-pot three-component condensation of aromatic aldehydes, acetamide and 2-naphthol in the presence of catalytic amounts of glycerosulfonic acid in glycerol as a green solvent was elaborated. Also a simple method for the one-pot three-component synthesis of 2,3-dihydroquinazoline-4(1H)-ones using of isatoic anhydride, aldehydes and ammonium acetate in the presence of glycerol as a green catalyst and solvent was described. In this light we introduced the brilliant and valuable role of glycerol in the synthesis of 2,3-dihydroquinazoline-4(1H)ones and 1-amidoalkyl-2-naphthols.
Propane-1,2,3-triyl tris(hydrogen sulfate): A mild and efficient recyclable catalyst for the synthesis of biscoumarin derivatives in water and solvent-free conditions
A simple, efficient, and ecofriendly procedure has been developed using propane-1,2,3-triyl tris(hydrogen sulfate) as a catalyst for the synthesis of biscoumarin derivatives in water and solvent-free conditions. The significant features of the present protocol are simplicity, environmentally benign, high yields, no chromatographic separation, and recyclability of the catalyst. (C) 2013 Ramin Rezaei. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.