89002-95-9Relevant academic research and scientific papers
"Syn-Effect" in the Desilylation Reaction of γ-Silylated Allylic and Vinylic Sulfones
Guha, Samar Kumar,Ukaji, Yutaka,Inomata, Katsuhiko
, p. 1158 - 1159 (2007/10/03)
The desilylation reaction of γ-silylated allylic sulfones was found to proceed through γ-silylated (E)-vinylic sulfones to afford the corresponding allylic sulfones by treatment with DBU and H2O. The Z/ E ratio of the resulting allylic sulfones varied according to the γ-substituents of the γ-silylated sulfones. This stereo-chemical outcome was rationalized by "syn-effect".
Reactions of (E)-2-Iodo-1-tosyl-1-alkenes as Useful Synthetic Intermediates
Iwata, Noriyoshi,Morioka, Tetsuro,Kobayashi, Toshifumi,Asada, Takahiro,Kinoshita, Hideki,Inomata, Katsuhiko
, p. 1379 - 1388 (2007/10/02)
(E)-2-Iodo-1-tosyl-1-alkenes readily available by iodosulfonization of 1-alkynes were found to be useful synthons for the regio- and/or stereoselective preparation of 1-tosyl-1-alkynes, 1-tosyl-2-alkynes, (Z)-vinyl and (Z)-allyl sulfones, β-tosyl enamines
Regio- and Stereoselective Synthesis of (E)- and (Z)-Allylsulfones from Aldehydes and Alkynes
Ozawa, Motoyasu,Iwata, Noriyoshi,Kinoshita, Hideki,Inomata, Katsuhiko
, p. 1689 - 1692 (2007/10/02)
Several (E)- and (Z)-1-p-toluenesulfonyl(=tosyl)-2-alkenes, allylsulfones, were regio- and stereoselectively prepared from aldehydes and alkynes, respectively, in good yields by application of the results of our previous investigation on "syn-effect" and
Regio- and Stereoselective Synthesis of (E)- and (Z)-Vinylic Sulfones and Their Conversion to the Corresponding Allylic Sulfones
Kobayashi, Toshifumi,Tanaka, Yuhji,Ohtani, Takashi,Kinoshita, Hideki,Inomata, Katsuhiko,Kotake, Hiroshi
, p. 1209 - 1212 (2007/10/02)
(E)- and (Z)-vinilyc sulfones were prepared regio- and stereoselectively from 1-alkenes or 1-alkynes in high yields via iodosulfonization in AcOEt-H2O.The vinylic sulfones thus prepared were converted to the corresponding allylic sulfones by treatment wit
1,3-Rearrangements of Some Allylic Sulphones
Knight, Derek J.,Lin, Peter,Whitham, Gordon H.
, p. 2707 - 2714 (2007/10/02)
The 1,3-rearrangement of a number of acyclic and cyclic allylic p-tolyl sulphones has been found to occur on treatment (a) with benzoyl peroxide (BPO) in CCl4 under reflux or (b) with sodium toluene-p-sulphinate in aqueous acetic acid at 110 deg C.Rearran
1,3-REARRANGEMENT OF ALLYLIC P-TOLYL SULFONES CATALYZED BY AND ITS APPLICATION TO THE SYNTHESIS OF α,β-UNSATURATED KETONES
Inomata, Katsuhiko,Murata, Yasue,Kato, Hisatoyo,Tsukahara, Yuhko,Kinoshita, Hideki,Kotake, Hiroshi
, p. 931 - 934 (2007/10/02)
The treatment of allylic p-tolyl sulfones with a catalytic amount of gave the 1,3-rearrangement products in high yields.A conveient method for the preparation of α,β-unsaturated ketones using as a catalyst from the 1,3-rearrangemen
1,3-Rearrangements of Allylic Sulphones
Lin, Peter,Whitham, Gordon H.
, p. 1102 - 1103 (2007/10/02)
Three sets of conditions which promote the 1,3-rearrangement of certain allylic sulphones are described.
