181120-06-9Relevant academic research and scientific papers
Formal Asymmetric (4+1) Annulation Reaction between Sulfur Ylides and 1,3-Dienes
Rousseau, Olivier,Delaunay, Thierry,Dequirez, Geoffroy,Trieu-Van, Tran,Robeyns, Koen,Robiette, Rapha?l
, p. 12899 - 12902 (2015)
A highly enantioselective synthesis of functionalized cyclopentanoids by a formal asymmetric (4+1) annulation strategy was developed. The methodology consists of a stereoselective cyclopropanation reaction between chiral sulfur ylides and 1,3-dienes follo
Asymmetric sulfur-ylide-mediated formal [4+1]-annulation reaction: Scope and mechanism
Clergue, Sébastien,Rousseau, Olivier,Delaunay, Thierry,Dequirez, Geoffroy,Tran, Trieu-Van,Aakchioui, Soumia El,Barozzino-Consiglio, Gabriella,Robiette, Rapha?l
supporting information, p. 11417 - 11425 (2018/10/21)
A formal [4+1]-annulation strategy between sulfur ylides and 1,3-dienes was developed to afford functionalized cyclopentanoids. The process consists of a stereoselective cyclopropanation reaction followed, in situ, by a stereospecific MgI2-cata
Metal-free carbon-carbon cross-couplings between the ion pairs in sulfonium tetraphenylborates
Xu, Mei-Li,Huang, Wenhua
supporting information, p. 4230 - 4232 (2014/07/22)
A series of sulfonium tetraphenylborates can be readily prepared by the metathesis of sulfonium halides with sodium tetraphenylborates. After heating at 120-150 °C, the sulfonium tetraphenylborates can smoothly undergo the cross-couplings between the tetraphenylborate anions and the sulfonium cations in the absence of a metal catalyst. For carbonylmethyl-, benzyl-, and allylsulfoniums, the corresponding carbonylmethyl-phenyl, benzyl-phenyl, and allyl-phenyl cross-coupling products can be obtained in 22-76% yields. An interionic electron-transfer mechanism for this cross-coupling reaction is proposed.
