@article { ISI:000263218700025,
	title = {Novel synthesis of coumarins employing triphenyl(alpha-carboxymethylene)-phosphorane imidazolide as a C-2 synthon},
	journal = {Tetrahedron Letters},
	volume = {50},
	number = {2},
	year = {2009},
	month = {JAN},
	pages = {236-238},
	publisher = {PERGAMON-ELSEVIER SCIENCE LTD},
	address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND},
	abstract = {<p>A novel one-pot synthesis of coumarins via intramolecular Wittig cyclization from the reaction of phenolic compounds containing ortho-carbonyl group and triphenyl(alpha-carboxy methylene)phosphorane imidazolide is described. (c) 2008 Elsevier Ltd. All rights reserved.</p>},
	keywords = {Carbonyldiimidazole, Coumarins, Intramolecular Wittig reaction, Phenolic compound, Phosphorane},
	issn = {0040-4039},
	doi = {10.1016/j.tetlet.2008.10.133},
	author = {Upadhyay, Puspesh K. and Kumar, Pradeep}
}
@article {48937,
	title = {Bi(OTf)3-promoted cascade annulation of hydroxy-pyranones and unsaturated γ-ketoesters for the construction of polycyclic bridged pyrano-furopyranones},
	journal = {Organic and biomolecular chemistry},
	volume = {22},
	year = {2024},
	month = {JAN },
	pages = {496-500},
	type = {Article},
	abstract = {<p>An efficient protocol for constructing complex three dimensional polycyclic bridged chromano-furopyranones and pyrano-furopyranones (closely related to bioactive natural products) via bismuth(III)-catalyzed cascade annulation of hydroxy-pyranones and unsaturated gamma-ketoesters is presented. This process involves intermolecular Michael addition, intramolecular hemiketalization, lactonization, formation of one C-C bond and two C-O bonds, rings, and contiguous stereocenters.</p>
},
	keywords = {1 3-Dicarbonyl Compounds, alkynols, Coumarins, Fungus},
	issn = {1477-0520},
	doi = {10.1039/d3ob01862h},
	author = {Rathod, Akshay B. and Borade, Balasaheb R. and Sambherao, Pooja I. and Kontham, Ravindar}
}
