62479-69-0Relevant articles and documents
Diastereospecific nazarov cyclization of fully substituted dienones: Generation of vicinal all-carbon-atom quaternary stereocenters
Jolit, Anais,Vazquez-Rodriguez, Saleta,Yap, Glenn P. A.,Tius, Marcus A.
, p. 11102 - 11105 (2013/10/22)
No vacancy: Fully substituted dienones that are highly polarized by a vinylogous carbonate group were found to undergo a remarkably rapid and diastereospecific Nazarov cyclization that led to cyclopentenones with vicinal all-carbon-atom quaternary centers (see example; SEM=2-(trimethylsilyl) ethoxymethyl, Tf=trifluoromethanesulfonyl). Copyright
Bicyclic β-hydroxytetrahydrofurans as precursors of medium ring keto-lactones
Ferraz, Helena M. C.,Longo Jr., Luiz S.
, p. 2945 - 2950 (2008/02/01)
(Chemical Equation Presented) The reaction of a series of cis-fused bicyclic β-hydroxytetrahydrofurans with ruthenium tetraoxide, generated in situ from ruthenium trichloride and sodium periodate, afforded 9- and 10-membered ketolactones in moderate to good yields, in a clean and straightforward fashion. The starting β-hydroxyethers were obtained from the corresponding 3-alkenols by two alternative procedures, depending on their pattern of substitution: (a) epoxidation by dimethyldioxirane, followed by base-catalyzed cyclization of the resulting epoxyalcohol, and (b) thallium trinitrate-mediated cyclization of the 3-alkenols, a method already described by our group.
A New Olefin Synthesis. Synchronous Elimination of Nitro and Ester Groups or Nitro and Keto Groups from β-Nitro Esters or β-Nitro Ketones
Ono, Noboru,Tamura, Rui,Eto, Hiromichi,Hamamoto, Isami,Nakatsuka, Tamon,et al.
, p. 3678 - 3684 (2007/10/02)
A new synthesis of α,β-unsaturated nitriles (13), esters (14), ketones (15), or sulfones (16) 1R2C=CR3Y, Y = CN (13), Y = COOEt (14), Y = C(=O)R (15), Y = SO2R (16)> starting from α-bromonitroalkanes (1) or α-chloronitro
