@article {47626,
	title = {Enantioselective synthesis of 5,6-dihydroindolizines by N-heterocyclic carbene (NHC)-catalyzed core-structure-inspired strategy of azolium-enolate cascade},
	journal = {Organic Letters},
	volume = {23},
	year = {2021},
	month = {JUL },
	pages = {5223-5228},
	type = {Article},
	abstract = {The core-structure motivated design has allowed the enantioselective synthesis of 5,6-dihydroindolizines via N-heterocyclic carbene (NHC) catalysis. The NHC-catalyzed reaction of alpha,beta-unsaturated aldehydes with the suitably substituted pyrrole derivatives proceed via the initial generation of alpha,beta-unsaturated acylazoliums from enals, and enolates from pyrroles and the reaction culminated in an efficient cascade process involving the Michael-aldol-lactonization-decarboxylation sequence to afford the products in reasonable yields and high selectivities. The method is further extended to the construction of spirocyclic 5,6-dihydroindolizines.},
	issn = {1523-7060},
	doi = {10.1021/acs.orglett.1c01761},
	author = {Ghosh, Arghya and Shee, Sayan and Barik, Shilpa and Gonnade, Rajesh G. and Biju, Akkattu T.}
}
@article {48358,
	title = {Enantioselective synthesis of dihydrothiopyranones via NHC- catalyzed [3+3] annulation of 2-bromoenals with beta-oxodithioesters},
	journal = {Organic Letters},
	volume = {24},
	year = {2022},
	month = {DEC},
	pages = {8848-8853},
	type = {Article},
	abstract = {<p>
	The N-heterocyclic carbene (NHC)-organocata-lyzed [3 + 3] annulation of 2-bromoenals with fi-oxodithioesters resulting in the enantioselective synthesis of dihydrothiopyranones is presented. The chiral a,fi-unsaturated acylazoliums generated from 2-bromoenals and carbenes underwent smooth interception with the sulfur nucleophiles to furnish the sulfur heterocycles in satisfactory yields/selectivity. The regioselective formation of dihydrothiopyranones over the competing dihydropyranones is noteworthy.</p>
},
	issn = {1523-7060},
	doi = {10.1021/acs.orglett.2c03642},
	author = {Barik, Shilpa and Shee, Sayan and Gonnade, Rajesh G. and Biju, Akkattu T.}
}
