benzofurans has been researched along with cyclohexadienone* in 4 studies
4 other study(ies) available for benzofurans and cyclohexadienone
| Article | Year |
|---|---|
Rhodium-catalyzed asymmetric arylative cyclization of meso-1,6-dienynes leading to enantioenriched cis-hydrobenzofurans.
Topics: Alkynes; Benzofurans; Catalysis; Cyclization; Cyclohexenes; Molecular Structure; Rhodium; Stereoisomerism | 2013 |
Rhodium-catalyzed tandem annulation and (5 + 1) cycloaddition: 3-hydroxy-1,4-enyne as the 5-carbon component.
A Rh-catalyzed tandem annulation and (5 + 1) cycloaddition was realized. 3-Hydroxy-1,4-enyne served as the new 5-carbon component for the (5 + 1) cycloaddition. Substituted carbazoles, dibenzofurans, and tricyclic compounds containing a cyclohexadienone moiety could be prepared efficiently. The identification of a byproduct suggests that metal carbene and ketene intermediates may be involved in the (5 + 1) cycloaddition. Topics: Benzofurans; Carbazoles; Carbon; Catalysis; Cycloaddition Reaction; Cyclohexenes; Rhodium | 2013 |
2-substituted benzofuran fragment ion formation in the electron ionization mass spectra of 6-alkyl- and 6-aryldibenzo(d,f)(1,3)dioxepine derivatives. 1. Spirocyclization of the molecular ions in the gas phase.
The formation of 2-substituted benzo[b]furan ions in the electron ionization (EI) mass spectra of a series of 6-alkyl- and 6-aryldibenzo(d,f)(1,3)dioxepines has been studied by means of exact mass measurements and multiple-stage mass spectrometry conditions using an ion trap mass spectrometer. The proposed mechanism of formation of benzo[b]furan ions requires the formation of a spirocyclic cyclohexadienone system, which undergoes elimination of a cyclopentadienone molecule. A parallel with the chemical conversion of arylmethyl-substituted dibenzo(d,f)(1,3)dioxepines into an analogous spirocyclic system was also underlined. Topics: Benzofurans; Cyclohexanes; Cyclohexenes; Gas Chromatography-Mass Spectrometry; Ions; Spectrometry, Mass, Electrospray Ionization; Spiro Compounds | 2007 |
Asymmetric synthesis of hydrobenzofuranones via desymmetrization of cyclohexadienones using the intramolecular Stetter reaction.
Dearomatization of phenols followed by oxidation affords cyclohexadienyloxyacetaldehydes, which produce hydrobenzofuranones via asymmetric intramolecular Stetter reaction in good to excellent yield. Quaternary as well as up to three contiguous stereocenters may be formed in good to excellent enantioselectivities and high diastereoselectivities. Topics: Aldehydes; Benzofurans; Cyclization; Cyclohexanes; Cyclohexenes | 2006 |