@article {48760,
	title = {NHC-catalyzed enantioselective synthesis of tetracyclic δ-lactones by (4+2) annulation of ortho-quinodimethanes with activated ketones},
	journal = {Organic Letters},
	volume = {25},
	year = {2023},
	month = {OCT },
	pages = {7852-7857},
	type = {Article},
	abstract = {<p>
	The N-heterocyclic carbene (NHC)-catalyzed generation of ortho-quinodimethanes (o-QDMs) from 9H-fluorene-1-carbaldehydes followed by the interception with activated ketones resulting in the enantioselective synthesis of tetracyclic delta-lactones is presented. High diastereoselectivity of products, remote C-(sp(3))-H functionalization, broad substrate scope, and mild reaction conditions are the notable features of the present (4 + 2) annulation.</p>
},
	issn = {1523-7060},
	doi = {10.1021/acs.orglett.3c03076},
	author = {Sarkar, Deeptanu and Barik, Shilpa and Shee, Sayan and Gonnade, Rajesh G. and Biju, Akkattu T.}
}
