34025-26-8Relevant articles and documents
Rhodium-Catalyzed Synthesis of Sulfur Ylides via in Situ Generated Iodonium Ylides
Vaitla, Janakiram,Hopmann, Kathrin H.,Bayer, Annette
supporting information, p. 6688 - 6691 (2017/12/26)
A convenient strategy for the synthesis of sulfur ylides via rhodium-catalyzed coupling of in situ generated iodonium ylides with sulfides or sulfoxides has been developed. A wide range of sulfur ylides were obtained in moderate to good yields from inexpensive sulfur compounds and active methylene compounds with a short reaction time (MW, 5-10 min) or 12-16 h at rt. Furthermore, these sulfoxonium ylides were used as novel acceptor/acceptor carbenes for N-H insertion reactions.
Single and multiple additions of dibenzoylmethane onto buckminsterfullerene
Giovannitti, Alexander,Seifermann, Stefan M.,Bihlmeier, Angela,Muller, Thierry,Topic, Filip,Rissanen, Kari,Nieger, Martin,Klopper, Wim,Braese, Stefan
supporting information, p. 7907 - 7913 (2014/01/06)
A novel dibenzoylmethane-fullerene e,e,e-tris adduct was synthesized by the application of a variation of the Bingel-Hirsch conditions and characterized among others by X-ray crystallography. In addition, the corresponding hexakis adduct was detected by MALDI-TOF-MS analysis. Its existence was supported by density-functional-theory (DFT) computations. Furthermore a new synthesis of bis(benzoyl)methanofullerene was established, and its molecular structure was elucidated by X-ray crystallography. DFT computations reproduced the experimentally determined conformation and predict a low energy barrier for the rotation of the two benzoyl moieties. We report the synthesis and crystal structure of tris-e,e,e-[bis(benzoyl)methano]fullerene. Furthermore, a new synthetic route to the corresponding mono adduct was developed, and its molecular structure was determined. The corresponding hexakis adduct was predicted by DFT calculations and identified by MALDI-TOF-MS as well as by 1H NMR spectroscopy. Copyright
Convenient Synthesis of Sulfur Ylides by Reaction of Active Methylene Compounds with Corey-Kim Reagent
Katayama, Sadamu,Watanabe, Toshio,Yamauchi, Masashige
, p. 973 - 976 (2007/10/02)
Reactions of active methylene compounds with Corey-Kim reagent in the presence of triethylamine afford stable sulfur ylides in satisfactory yields.
Synthesis of 1,3-Dicarbonyl Compounds by the Oxidation of 3-Hydroxycarbonyl Compounds with Corey-Kim Reagent
Katayama, Sadamu,Fukuda, Kinue,Watanabe, Toshio,Yamauchi, Masashige
, p. 178 - 183 (2007/10/02)
A new method for the preparation of various 1,3-dicarbonyl compounds is described.Oxidation of 3-hydroxycarbonyl compounds without substituent at C-2 position by the Corey-Kim reagent (N-chlorosuccinimide-dimethyl sulfide) afforded the stable dimethylsulfonium methylides, which on reductive desulfurization by zinc-acetic acid furnished the 1,3-dicarbonyl derivatives.On the other hand, the same treatment of 2-mono-, or 2,2-disubstituted 3-hydroxy-carbonyl compounds gave directly the corresponding 1,3-dicarbonyl analogous, respectively.
Introduction of Oxygen Functions into the α-Position of β-Diketones, 8. Ozonolysis of Sulfonium Ylides
Schank, Kurt,Schuhknecht, Christoph
, p. 3032 - 3041 (2007/10/02)
(Dimethylsulfonio)diacylmethanides 1, prepared by known methods, are cleaved by equimolar amounts of ozone in aprotic medium yielding vicinal triketones 2 and DMSO.Peroxydic reaction products are not detectable.
