109787-25-9Relevant academic research and scientific papers
Rhodium-Catalyzed Highly Regio- and Enantioselective Hydrogenation of Tetrasubstituted Allenyl Sulfones: An Efficient Access to Chiral Allylic Sulfones
Long, Jiao,Shi, Liyang,Li, Xiong,Lv, Hui,Zhang, Xumu
, p. 13248 - 13251 (2018)
A highly regio- and enantioselective hydrogenation of challenging tetrasubstituted allenyl sulfones has been developed, affording chiral allylic sulfones in good yields with excellent regio- and enantioselectivities (up to 99 % yield and 99 % ee). This me
Silver-catalyzed rearrangement of propargylic sulfinates to allenic sulfones
Harmataa, Michael,Huanga, Chaofeng
experimental part, p. 972 - 974 (2009/05/27)
Treatment of propargylic sulfinate esters with 2 mol% of silver hexafluoroantimonate results in the rapid formation of allenic sulfones in essentially quantitative yield.
Synthesis of thiophenes from allenyl sulfones involving α,β-unsaturated sulfines as intermediates
Linden, Johannes B. van der,Asten, Peter F. T. M. van,Braverman, Samuel,Zwanenburg, Binne
, p. 51 - 60 (2007/10/02)
The synthesis of thiophenes starting from allenyl sulfones, via intermediate formation of α,β-unsaturated sulfines, is described.The allenyl sulfones were synthesized by a -sigmatropic rearrangement of appropriately substituted prop-2-ynyl sulfinates
Studies on the Addition of Allyl Oxides to Sulfonylallenes. Preparation of Highly Substituted Allyl Vinyl Ethers for Carbanionic Claisen Rearrangements
Denmark, Scott E.,Harmata, Michael A.,White, Kathleen S.
, p. 4031 - 4042 (2007/10/02)
Thirty-five allyl vinyl ethers bearing an arylsulfonyl anion-stabilizing group have been prepared by addition of allylic alkoxides to (arylsulfonyl)allenes.The allyl vinyl ethers are produced as either β,γ-unsaturated or α,β-unsaturated sulfones depending upon the substitution pattern of the allene and the reaction conditions.A wide variety of substitution patterns are available by using this method.Factors that control the position and stereochemistry of the vinyl ether double bond are discussed.
CARBANION-ACCELERATED CLAISEN REARRANGEMENTS 3. VICINAL QUATERNARY CENTERS
Denmark, Scott E.,Harmata, Michael A.
, p. 1543 - 1546 (2007/10/02)
The preparation and Claisen rearrangement of highly substituated allyl vinyl ethers is described.It is demonstrated that the thermal and anionic versions of the Claisen rearrangement are capable of creating vicinal quaternary centers.
