Eosin Y photoredox catalyzed net redox neutral reaction for regiospecific annulation to 3-sulfonylindoles <i>via</i> anion oxidation of sodium sulfinate salts
作者:Rajendra S. Rohokale、Shrikant D. Tambe、Umesh A. Kshirsagar
DOI:10.1039/c7ob02977b
日期:——
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
CAIXACH J.; CAPELL R.; GALVEZ C.; GONZALEZ A.; ROCA N., J. HETEROCYCL. CHEM., 1979, 16, NO 8, 1631-1635
作者:CAIXACH J.、 CAPELL R.、 GALVEZ C.、 GONZALEZ A.、 ROCA N.
DOI:——
日期:——
DALTON, L.;HUMPHREY, G. L.;COPPER, M. M.;JOULE, J. A., J. CHEM. SOC. PERKIN TRANS., 1983, N 10, 2417-2422
作者:DALTON, L.、HUMPHREY, G. L.、COPPER, M. M.、JOULE, J. A.
DOI:——
日期:——
<i>tert</i>-Butyl Hydroperoxide (TBHP)-Initiated Vicinal Sulfonamination of Alkynes: A Radical Annulation toward 3-Sulfonylindoles
作者:Fei Chen、Qiang Meng、Shang-Qing Han、Bing Han
DOI:10.1021/acs.orglett.6b01427
日期:2016.7.15
novel, efficient, and facile vicinal sulfonamination of alkynes by the reaction of accessible 2-alkynyl arylazides with sulfinic acids in the presence of tert-butylhydroperoxide (TBHP) has been developed. This protocol utilizes sulfinic acids as the sulfonating reagent, azidos as the aminating reagent, and TBHP as the sulfonyl radical initiator. By using this protocol, a variety of potentially bioactive