Free Radical Reaction of Diisopropyl Xanthogen Disulfide with Unsaturated Systems
摘要:
1,3-Dithiol-2-ones are prepared in one pot reaction from commercially available diisopropyl xanthogen disulfide (2) and alkynes under radical conditions. The 5-membered heterocycle is formed via a ring closure of vinyl radical (7) resulting from the thio radical addition of 5 to an alkyne. The reaction worked best for alkynes conjugated with a C=C double bond. The oxygen atoms of reagent (2) could be replaced by sulfur and this new reagent furnished 1,3-dithiol-2-thiones under radical conditions.
GHOSH, TIRTHANKAR, J. ORG. CHEM., 55,(1990) N, C. 1146-1147
作者:GHOSH, TIRTHANKAR
DOI:——
日期:——
RUSSELL, G. A.;LAW, W. C.;ZALETA, M., J. AMER. CHEM. SOC., 1985, 107, N 14, 4175-4182
作者:RUSSELL, G. A.、LAW, W. C.、ZALETA, M.
DOI:——
日期:——
Free Radical Reaction of Diisopropyl Xanthogen Disulfide with Unsaturated Systems
作者:Yves Gareau、André Beauchemin
DOI:10.3987/com-98-8230
日期:——
1,3-Dithiol-2-ones are prepared in one pot reaction from commercially available diisopropyl xanthogen disulfide (2) and alkynes under radical conditions. The 5-membered heterocycle is formed via a ring closure of vinyl radical (7) resulting from the thio radical addition of 5 to an alkyne. The reaction worked best for alkynes conjugated with a C=C double bond. The oxygen atoms of reagent (2) could be replaced by sulfur and this new reagent furnished 1,3-dithiol-2-thiones under radical conditions.
Reaction of trithiolanes with dihalocarbenes under phase-transfer catalysis. A convenient synthesis of trithiocarbonates and thionocarbonates