A Facile Method for the Synthesis of Dihydrofuranonaphthoquinones, Furanonaphthoquinones, and Benzofuranonaphthoquinones
摘要:
An efficient synthesis of dihydrofuranonaphthoquinone, furanonaphthoquinone, and benzonaphthoquinone derivatives has been carried out starting from 2-hydroxy-1,4-naphthoquinone and a variety of vinyl sulfides in moderate yields.
One-Pot Construction of Medium- and Large-Sized Ring Substituted Furans. Efficient Conversion to Dibenzofurans, Coumestans, and 4-Pyrones
作者:Yong Rok Lee、Jung Yup Suk、Byung So Kim
DOI:10.1021/ol0056933
日期:2000.5.1
New efficient synthesis of medium- and large-sizedring substituted furans is achieved by 1,3-dicarbonyl compounds with vinyl sulfides in the presence of Ag(2)CO(3)/Celite (Fétizon's reagent) in a one-pot procedure. The synthesized furans can be further converted to biologically interesting compounds such as dibenzofurans, coumestans, benzofuroquinolinone, and 4-pyrone.
Clay Catalysis: A Simple and Efficient Synthesis of Enolthioethers from Cyclic Ketones
作者:Bouchta Labiad、Didier Villemin
DOI:10.1055/s-1989-27180
日期:——
Montmorillonite KSF in refluxing toluene catalyses the synthesis of 1-alkyl- and 1-arylthioalkenes from ketones and thiols (thiophenol or 1-butanethiol).
Dienol rearrangements catalyzed by nickel chloride
作者:Keith S. Kyler、A. Bashir-Hashemi、David S. Watt
DOI:10.1021/jo00180a025
日期:1984.3
New desulfurizations by nickel-containing complex reducing agents
作者:Sandrine Becker、Yves Fort、Paul Caubere
DOI:10.1021/jo00312a029
日期:1990.12
Dihalocyclopropanation of Phenylthio or Butylthiocycloalkenes Under Phase Transfer Conditions. Opening of Cyclopropanes Under Microwave Irradiation
作者:Didier Villemin、Bouchta Labiad
DOI:10.1080/00397919208021338
日期:1992.7
Dihalocarbenes (X=Cl,Br) generated under phase transfer conditions added to phenylthio or butylthiocylcloalkenes give corresponding 1,1-dihalo-2-thiobutyl or thiophenyl-cyclopropanes. The ring opening of dichlorophenylthiocyclopropanes (2a, 2b, 2c) was obtained by using silver tetrafluoborate on alumina under microwave irradiation.