@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.}
}
