Ethylenediammonium diformate (EDDF) in PEG600: an efficient ambiphilic novel catalytic system for the one-pot synthesis of 4H-pyrans via Knoevenagel condensation
作者:Anuj Thakur、Mohit Tripathi、U. Chinna Rajesh、Diwan S. Rawat
DOI:10.1039/c3ra42410c
日期:——
system was developed as a catalyst for the Knoevenagel condensation and Knoevenagel initiated three-componentone-potsynthesis of 4H-pyrans at room temperature with high yields and in short reaction times. Further, the EDDF-PEG600 catalytic system was recycled six times without any appreciable loss in its activity and hence can be termed as a green, environmentally benign catalytic system. A plausible
Synthesis, molecular modeling and BACE-1 inhibitory study of tetrahydrobenzo[b] pyran derivatives
作者:Vijaya Bhaskar、Reshma Chowdary、Sheshagiri R. Dixit、Shrinivas D. Joshi
DOI:10.1016/j.bioorg.2018.11.023
日期:2019.3
documented as one of the possible therapeutic targets for the treatment of Alzheimer's disease. In this paper, we report the synthesis and the for β-secretase (BACE-1) inhibitory activity of new series of tetrahydrobenzo [b] pyranderivatives. One-pot synthesis of tetrahydrobenzo [b] pyrans was carried out by condensing aromatic aldehyde, malononitrile and 1,3-cyclohexanedione using ionic liquid 1-butyl-3-methyl
Practical and Green Protocol for the Synthesis of Substituted 4<i>H</i>-Chromenes Using Room Temperature Ionic Liquid Choline Chloride-Urea
作者:C. N. Revanna、T. R. Swaroop、G. M. Raghavendra、D. G. Bhadregowda、K. Mantelingu、K. S. Rangappa
DOI:10.1002/jhet.880
日期:2012.7
An efficient and convenient synthesis of substituted 4H‐chromenes is described usingroomtemperatureionicliquid (RTIL) cholinechloride–urea in one pot under solvent free conditions. Three‐component Knoevenagel condensation of an aromatic aldehyde, with an active methylene compound, and a cyclohexane dione is reported. This new approach has advantage of excellent yields (82–96%), clean reaction