@article {49830,
	title = {Ipso-cyclization via a dienone-phenol rearrangement of alkynyloxy cyclohexadienones for the synthesis of oxaspiro[4.5]trienones},
	journal = {Journal of Organic Chemistry},
	volume = {90},
	year = {2025},
	month = {SEP},
	pages = {13399-13406},
	type = {Article},
	abstract = {<p>
	Herein, we present a convenient method to access oxaspiro[4.5]trienone compounds from alkynyloxy cyclohexadienones. The reactions are catalyzed by Lewis/Bronsted acids, yielding the desired products in moderate to good yields under very mild reaction conditions. The process, which involves a dienone-phenol rearrangement, is characterized by its simplicity and the absence of any additional activators. The synthesis of the oxaspiro[4.5]trienone compounds is amenable to gram-scale reactions along with subsequent product transformations, making this approach practical and attractive.</p>
},
	issn = {0022-3263},
	doi = {10.1021/acs.joc.5c00893},
	author = {Rai, Archana and Kundu, Ananya I. and Shukla, Ekta and Das, Utpal}
}
@article {50106,
	title = {Intramolecular alder-ene reaction of 2-methyl-4-(alkynyloxy)cyclohexa-2,5-dienones: catalyst-free access to hydrobenzofuran derivatives},
	journal = {Organic Letters},
	volume = {28},
	year = {2026},
	month = {APR },
	pages = {5195-5199},
	type = {Article},
	abstract = {<p>
	An atom-economical intramolecular Alder-ene reaction has been developed to construct hydrobenzofurans via the direct coupling of an allylic hydrogen atom to an alkyne. This transformation delivers hydrobenzofuran and hydroindole scaffolds in a single step, incorporating all atoms of the starting materials and exemplifying high atom economy. The synthesized products serve as versatile intermediates and exhibit notable reactivity toward further derivatization, as showcased through a range of transformations enabling rapid access to structurally diverse and complex molecules.</p>
},
	issn = {1523-7060},
	doi = {10.1021/acs.orglett.6c01057},
	author = {Rai, Archana and Bajpai, Priyam and Kundu, Ananya I. and Vanka, Kumar and Das, Utpal}
}
