@article {43875,
	title = {Lewis acid catalyzed cascade annulation of alkynols with alpha-ketoesters: a facile access to gamma-spiroketal-gamma-lactones},
	journal = {Chemical Communications},
	volume = {53},
	year = {2017},
	month = {JUN},
	pages = {6641-6644},
	type = {Article},
	abstract = {A novel Lewis acid catalyzed intermolecular cascade annulation of alkynols with alpha-ketoesters has been developed. This simple and efficient cascade annulation proceeds through a 5-exo-dig cyclization of alkynols followed by annulation with alpha-ketoester to provide a wide variety of unsaturated gamma-spiroketal-gamma-lactones (1,6-dioxaspiro[4.4]non-3-en-2-ones) related to many natural products.},
	doi = {10.1039/c7cc03668j},
	author = {Kambale, Digambar A. and Thorat, Sagar S. and Pratapure, Madhukar S. and Gonnade, Rajesh G. and Kontham, Ravindar}
}
