Synthesis, characterization and biological approach of metal chelates of some first row transition metal ions with halogenated bidentate coumarin Schiff bases containing N and O donor atoms
作者:Chetan T. Prabhakara、Sangamesh A. Patil、Shivakumar S. Toragalmath、Shivashankar M. Kinnal、Prema S. Badami
DOI:10.1016/j.jphotobiol.2016.02.004
日期:2016.4
complexes are completely soluble in DMF and DMSO. The non-electrolytic nature of the metalcomplexes was confirmed by molar conductance studies. Elemental analysis study suggest [ML2(H2O)2] stoichiometry, here M=Co(II), Ni(II) and Cu(II), L=deprotonated ligand. The obtained IR data supports the binding of metal ion to Schiff base. Thermal study suggests the presence of coordinated water molecules. Electronic
In this article, we describe the synthesis of various substituted Chromene[1,3]thiazolo [2,1,3] benzothiadiazoles 4a-l by conventional (Method A) and microwave-assisted (Method B) which achieved reductions in reaction times, higher yields, and a cleaner reaction than the conventional method. A comparative study of these two methods has been discussed.
Gangadhar; Kumar, Ch Harish; Krupadanam, G. L. David, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1999, vol. 38, # 1, p. 87 - 89
作者:Gangadhar、Kumar, Ch Harish、Krupadanam, G. L. David
DOI:——
日期:——
Establishing a Flow Process to Coumarin-8-Carbaldehydes as Important Synthetic Scaffolds
作者:Jaroslav Zak、David Ron、Elena Riva、Heather P. Harding、Benedict C. S. Cross、Ian R. Baxendale
DOI:10.1002/chem.201201039
日期:2012.8.6
Despite their usefulness as fluorophores and synthetic precursors, efficient and reliable routes to coumarin‐8‐carbaldehydes are lacking. We describe here a high‐yielding continuous flow synthesis that requires no manual intermediate purification or work‐up, giving access to multigram quantities of the aldehyde product.
Synthesis of pyrano isoxazoline/isoxazole annulated coumarins via intramolecular nitrile oxide cycloaddition and their cytotoxicity
作者:C. Krishna、M. V. Bhargavi、Y. J. Rao、G. L. D. Krupadanam
DOI:10.1134/s1070363217080345
日期:2017.8
An efficient and straight forward procedure for the syntheses of isoxazoline/isoxazole fused coumarin analogues 7a–7g and 8a–8g from the corresponding 7-O-allyloxy coumarin oximes 5a–5g and 7-O-propargyloxy coumarin oximes 6a–6g is presented. High yields and simple experimental procedures are important features of this methodology. This method is useful for the construction of many biologically active