95314-83-3Relevant articles and documents
A facile regio- and stereocontrolled synthesis of (E)-disubstituted vinyl sulfones via transformation of alkenylzirconocenes with sulfonyl chlorides
Duan, De-Hui,Huang, Xian
, p. 317 - 318 (2007/10/03)
Alkenylzirconium reagents, readily obtained by hydrozirconation of terminal alkynes, can smoothly react with sulfonyl chlorides to afford (E)- disubstituted vinyl sulfones in moderate to good yields. Some γ- functionalized vinyl sulfones can be also conve
Polyethylene Glycol (PEG) 4000 Catalysed Regioselective Nucleophilic Ring Opening of Oxiranes - A New And Convenient Synthesis of β-Hydroxy Sulfone and β-Hydroxy Sulfide
Maiti, A. K.,Bhattacharyya, P.
, p. 10483 - 10490 (2007/10/02)
Oxiranes and sodium p-toluene sulfinate salt react smoothly in a regioselective manner in the presence of PEG4000 to furnish β-hydroxy sulfone and β-hydroxysulfide.The reaction was extended for the preparation of alkylsulfones and β-oxosulfones from alkylhalide and β-oxohalide respectively.
"Syn-Effect" in the Conversion of (E)-Vinylic Sulfones to the Corresponding Allylic Sulfones
Hirata, Takaki,Sasada, Yoshihiro,Ohtani, Takashi,Asada, Takahiro,Kinoshita, Hideki,et al.
, p. 75 - 96 (2007/10/02)
It was found that (E)-vinylic sulfones preferentially afford (Z)-allylic sulfones as kinetically-controlled products by treatment with a base under mild conditions, while (Z)-vinylic sulfones give (E)-allylic sulfones.Such stereochemical relationship was
A SIMPLE METHOD FOR THE SYNTHESIS OF γ-FUNCTIONALIZED VINYL AND ALLYL SULFONES
Najera, Carmen,Perez-Pinar, Alfonso,Sansano, Jose M.
, p. 6337 - 6352 (2007/10/02)
The synthesis of γ-functionalized vinyl sulfones 3 have been carried out directly starting from dibromides 2 derived from allyl sulfones 1 by reaction with different nucleophiles.The process is stereoselective affording compounds 3 with E configuration ex
Regioselective ring opening of oxiranes catalysed by montmorillonite clay: A simple synthesis of β-hydroxy sulfones
Biswas,Bhattacharyya
, p. 569 - 573 (2007/10/02)
Oxiranes and sodium p-toluene sulfinate salt react smoothly in a regioselective manner in the presence of montmorillonite clay to furnish the corresponding β-hydroxy sulfones in good to excellent yield.
Efficient synthesis of sulphones using polysorbate-80 as phase transfer catalyst
Biswas, Goutam K,Chakrabarty, Manas,Bhattacharyya, Prantosh
, p. 1059 (2007/10/02)
A very easy and practical method of preparing sulphones from alkyl halides has been developed using Polysorbate-80 as phase transfer catalyst.
A simple and rapid preparation of sulfones from alkyl halides using ultrasound
Biswas,Jash,Bhattacharyya
, p. 491 - 492 (2007/10/02)
Appropriate alkyl halides and sodium p-toluenesulfinates react rapidly in DMF-water at room temperature under the influence of ultrasound to afford sulfones. Using this procedure a wide variety of sulfones have been prepared.
Substituted Lithium (E)-3-Lithio-3-tosyl-2-propenolates: Useful Intermediates in Organic Synthesis
Najera, Carmen,Yus, Miguel
, p. 1491 - 1499 (2007/10/02)
The lithiation of substituted tosylated epoxides 7 derived from allylic sulfones with methyllithium leads to lithium (E)-3-lithio-3-tosyl-2-propenolates 5 in a stereoselective manner.The further reaction of these intermediates with different electrophilic
Palladium-catalyzed allylic oxidation of 1-(p-toluenesulfonyl)-2-propene and 1-(trimethylsilyl)-1-(p-toluenesulfonyl)-2-propene
Muzart, Jacques,Pete, Jean-Pierre,Riahi, Abdelkhalek
, p. 113 - 120 (2007/10/02)
The course of palladium-catalyzed oxidation of a terminal alkene by t-BuOOH or by O2/H2O is greatly modified when the allylic carbon bears a p-toluenesulfonyl substituent, and allylic oxidation results.Mechanistic explanations of this observation are prop
OXIDATION REGIOSELECTIVE DE SULFONES ALLYLIQUES CATALYSEE PAR LE PALLADIUM ET LA LUMIERE: FORMATION D'ALDEHYDES ET ALCOOLS α,β-ETHYLENIQUES β-SULFONYLES
Muzart, J.,Riahi, A.,Pete, J. P.
, p. 269 - 280 (2007/10/02)
The irradiation of oxygenated solution of allyl sulfones containing small amounts of palladium trifluoroacetate led to regioselective oxidation of the allylic position furthest from the electron-withdrawing group.The efficiency of this reaction increased
