@article {49028,
	title = {Divergent access to polycyclic spiro- and fused-N,O-ketals through Bi(OTf)3-catalyzed [4+2]-annulation of cyclic N-sulfonyl ketimines and alkynols},
	journal = {Chemical Communications},
	volume = {60},
	year = {2024},
	month = {JAN},
	pages = {1144-1147},
	type = {Article},
	abstract = {<p>
	Bismuth(iii) triflate-catalyzed [4+2]-annulation of cyclic N-sulfonyl ketimines (derived from saccharin) and alkynyl alcohols (4-pentyn-1-ols and 5-hexyn-1-ols) has been reported. This cascade annulation provides a diverse array of polycyclic spiro-and-fused N,O-ketals with excellent substrate scope, good isolated yields, and diastereoselectivities under mild reaction conditions.</p>
},
	issn = {1359-7345},
	doi = {10.1039/d3cc05599j},
	author = {Nakate, Ashwini K. and Kataria, Priyanka and Sambherao, Pooja I. and Krishna, Gamidi Rama and Kontham, Ravindar}
}
