@article {44203,
	title = {Eosin Y photoredox catalyzed net redox neutral reaction for regiospecific annulation to 3-sulfonylindoles via anion oxidation of sodium sulfinate salts},
	journal = {Organic \& Biomolecular Chemistry},
	volume = {16},
	year = {2018},
	month = {JAN},
	pages = {536-540},
	type = {Article},
	abstract = {<p>An eosin Y photoredox catalyzed net redox neutral process for 3-sulfonylindoles via the anionic oxidation of sodium sulfinate salts and its radical cascade cyclization with 2-alkynyl-azidoarenes was developed with visible light as a mediator. The reaction offers metal and oxidant/reductant free, visible light mediated vicinal sulfonamination of alkynes to 2-aryl/alkyl-3-sulfonylindoles and proceeds via the generation of a sulfur-centered radical through direct oxidation of the sulfinate anion by an excited photocatalyst with a reductive quenching cycle. The mild conditions, use of an organic dye as photo-catalyst, bench stability and easily accessible starting materials make the present approach green and attractive.</p>},
	issn = {1477-0520},
	doi = {10.1039/c7ob02977b},
	author = {Rohokale, Rajendra S. and Tambe, Shrikant D. and Kshirsagar, Umesh A.}
}
@article {45354,
	title = {Metal-free synthesis of 3-thiocyanatobenzothiophenes by eosin Y photoredox-catalyzed cascade radical annulation of 2-alkynylthioanisoles},
	journal = {European Journal of Organic Chemistry},
	year = {2018},
	month = {SEP},
	pages = { 4867-4873},
	type = {Article},
	abstract = {<p>A convenient, efficient, metal-free synthesis of 3-thiocyanatobenzothiophenes has been developed that uses eosin Y in a visible-light-mediated photoredox-catalyzed anion oxidation of the ammonium salt of thiocyanate and proceeds through the cascade radical annulation of 2-alkynylthioanisole at room temperature. The present protocol requires visible light as a green energy source, an organic dye as the photocatalyst, and oxygen as a green oxidant to provide a mild route with a broad substrate scope for the formation of potentially bioactive 3-substituted benzothiophene derivatives in good yields.</p>},
	doi = {10.1002/ejoc.201800833},
	author = {Tambe, Shrikant D. and Jadhav, Mahesh S. and Rohokale, Rajendra S. and Kshirsagar, Umesh A.}
}
@article {44369,
	title = {Visible-light-mediated eosin Y photoredox-catalyzed vicinal thioamination of alkynes: radical cascade annulation strategy for 2-substituted-3-sulfenylindoles},
	journal = {European Journal of Organic Chemistry},
	year = {2018},
	month = {MAY},
	pages = {2117-2121},
	type = {Article},
	abstract = {An organic dye photoredox-catalyzed regiospecific radical cascade annulation strategy of 2-alkynyl-azidoarenes to generate 3-sulfenylindoles via vicinal thioamination of alkynes at room temperature, mediated by visible light, was developed. The method requires mild conditions, including visible light as a traceless green energy source, room temperature, eosin Y organic dye as a photoredox catalyst, ambient air as oxidant, and easily available starting materials to provide a green, efficient, metal- and strong-oxidant-free synthesis of 3-sulfenylindoles with broad substrate scope through vicinal thioamination of alkynes.},
	doi = {10.1002/ejoc.201800287},
	author = {Tambe, Shrikant D. and Rohokale, Rajendra S. and Kshirsagar, Umesh A.}
}
