@article {48713,
	title = {Synthesis of N-functionalized 2,3-disubstituted benzofurans/naphthofurans from para-quinone methides and isocyanides via the [4+1] annulation pathway},
	journal = {Organic Chemistry Frontiers},
	volume = {10},
	year = {2023},
	month = {JUL},
	pages = {3746-3751},
	type = {Article},
	abstract = {<p>
	A scandium triflate catalyzed [4 + 1] cycloaddition reaction of 2-hydroxy-substituted para-quinone methides and isocyanides has been developed. This operationally simple, efficient and practical protocol provides straightforward access to a variety of N-functionalized 2,3-disubstituted benzofuran/naphthofuran derivatives with broad functional group compatibility and good scalability.</p>
},
	issn = {2052-4129},
	doi = {10.1039/d3qo00048f},
	author = {Kale, Someshwar B. and Kumar, Manish and Shinde, Dinesh R. and Krishna, Gamidi Rama and Das, Utpal}
}
@article {49836,
	title = {Synthesis of benzannulated [5,6] oxa-fused/spiro-lactones via [4+2] cycloaddition with quinone methides: new insights into deconjugated butenolide reactivity},
	journal = {Journal of Organic Chemistry},
	volume = {90},
	year = {2025},
	month = {OCT},
	pages = {15185-15190},
	type = {Article},
	abstract = {<p>
	In this study, we unfold a Lewis-acid-catalyzed inverse electron demand hetero Diels-Alder (IEDHDA) [4 + 2] reaction, leveraging the unique beta-selective nucleophilicity of deconjugate lactone in conjunction with quinone methides for the synthesis of polycyclic fused and spiro acetals in a one-pot process. This cascade annulation reaction efficiently generates 3/4 chiral centers with high diastereoselectivity. The developed methodology proceeds under mild reaction conditions and exhibits a broad substrate scope for fused and spiro acetal formation.</p>
},
	issn = {0022-3263},
	doi = {10.1021/acs.joc.5c01468},
	author = {Kumar, Manish and Kale, Someshwar B. and Jawahar, Subramani and Barkade, Apurva D. and Das, Utpal}
}
