A one pot, three component synthesis of coumarin …
Room Temperature One-Pot Green Synthesis of Coumarin …
An efficient,simple and one-pot protocol for synthesis of coumarin ..
 Banerjee, S., Horn, A., Khatri, H., and Sereda, G. 2011, A green one-pot multicomponent synthesis of 4H-pyrans and polysubstituted aniline derivatives of biological, pharmacological, and optical applications using silica nanoparticles as reusable catalyst, Tetrahedron Lett., 52 (16), 1878–1881.
 Banerjee, S., and Saha, A., 2013, Free-ZnO nanoparticles: A mild, efficient and reusable catalyst for the one-pot multicomponent synthesis of tetrahydrobenzo[b]pyran and dihydropyrimidone derivatives, New J. Chem., 37 (12), 4170–4175.
Microwave-Promoted One-Pot Syntheses of Coumarin …
 Wu, M., Feng, Q., Wan, D., and Ma, J., 2013, CTACl as catalyst for four-component, one-pot synthesis of pyranopyrazole derivatives in aqueous medium, Synth. Commun., 43 (12), 1721–1726.
 Guo, R.Y., An, Z.M., Mo, L.P., Yang, S.T., Liu, H.X., Wang, S.X., Zhang, Z.H., 2013, Meglumine promoted one-pot, four-component synthesis of pyranopyrazole derivatives, Tetrahedron, 69 (47), 9931–9938.
Unexpected one-pot synthesis of new polycyclic coumarin…
 Saha, A., Payra, S., and Banerjee, S., 2015, One-pot multicomponent synthesis of highly functionalized bio-active pyrano[2,3-c]pyrazole and benzylpyrazolyl coumarin derivatives using ZrO2 nanoparticles as a reusable catalyst, Green Chem., 17 (5), 2859–2866.
 Bararjanian, M., Balalaei, S., Movassag, B., and Amani, A.M., 2009, One-pot synthesis of pyrano[2, 3-d]pyrimidinone derivatives catalyzed by L-proline in aqueous media, J. Iran. Chem. Soc., 6 (2), 436–442.
19/12/2017 · One-pot synthesis of..
Methods for the Synthesis of Coumarin Derivatives, ..
A mild and green method has been developed for the preparation of coumarins derivatives through the one-pot reactions
Derivatives Using Glutamic Acid Under Solvent ..
01/06/2016 · Synthesis of 3-carboxylated Coumarins by Knoevenagel Condensation and ..
Acid Under Solvent-Free Conditions.
Microwave Assisted Convenient One-Pot Synthesis of ..
One-Pot Synthesis of Alkyl 4-alkyl-2,8-dioxo-2H,8H …
A simple, facile, and convenient practical method for the room temperature one-pot synthesis of a series of potentially biologically active coumarin-3-carboxylic acids has been developed in water from the Knoevenagel condensation and intramolecular cyclization of diverse 2-hydroxybenzaldehydes with Meldrum’s acid using either potassium carbonate or sodium azide as a commercially available, cheap, and eco-friendly catalyst. The salient features of the present protocol are mild reaction conditions, good to excellent yields, high atom-economy, environmentally benignity, easy isolation of products, without column chromatography, clean reaction profiles, and applicability toward large-scale synthesis.
Easy Access to Coumarin Derivatives Using Alumina …
Potassium carbonate or sodium azide catalyzed one-pot synthesis of coumarin-3-carboxylic acids has been developed via Knoevenagel condensation and intramolecular cyclization of diverse 2-hydroxybenzaldehydes with Meldrum’s acid in water at room temperature.
05/06/2012 · Journal of Chemistry is ..
Ghosh et al. 37 have been reported a glacial acetic acid catalyzed reaction for the combinatorial synthesis of highly functionalized benzylpyrazolyl coumarin 85 prepared by a green one-pot four-component reaction between aryl hydrazine/ hydrazine hydrate 81, ethyl acetoacetate 82, aromatic aldehydes 83 and 4-hydroxycoumarin 84 in water medium under refluxing conditions.
Easy Access to Coumarin Derivatives Using Alumina ..
 Mohamadpour, F., Maghsoodlou, M.T., Heydari, R., and Lashkari, M., 2016, Copper(II) acetate monohydrate: An efficient and eco-friendly catalyst for the one-pot multi-component synthesis of biologically active spiropyrans and 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives under solvent-free conditions, Res. Chem. Intermed., 42 (12), 7841–7853.
PEG Mediated Eco-Friendly One Pot Sunthesis of …
Kadam et al. 34 have been repoted a novel synthesis of 3-amino-4-(4I-substituted benzylidene) - 1H-pyrazol-5(4H)-one derivatives 72 and 3-amino-4-(4I-substitued benzylidene) - 4, 5 - dihydro-5-oxopyrazole-1-carbothioamide derivatives 73 by the reaction of substituted benzaldehyde/ heteroaldehyde 70, ethylcyano acetate 71 and thiosemicarbazide was heated in presence of PEG-400.
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