Manganese(III)-Mediated Selective Diphenylphosphinoyl Radical Reaction of 1,4-Diaryl-1-butynes for the Synthesis of 2-Phosphinoylated 3,4-Dihydronaphathalenes
A diphenylphosphinoyl radical-initiated sequential reaction of 1,4-diaryl-1-butynes and analogues is developed for the synthesis of 2-phosphinoylated 3,4-dihydronaphathalenes and related compounds.
Ligand exchange reaction of sulfoxides in organic synthesis: A novel method for synthesizing acetylenes and allenes from carbonyl compounds through sulfoxides having a trifluoro-methanesulfonyloxy group on the β-carbon
A novel method for synthesizing acetylenes and allenes from carbonyl compounds is described. Ligand exchange reaction of alkenylsulfoxides having a trifluoromethanesulfonyloxy group on the β-carbon, which were derived from α-alkyl β-ketosulfoxides, with n-BuLi gave disubstituted acetylenes in good yields. In the case of alkenylsulfoxides having both the trifluoromethanesulfonyloxy and aryl groups on
Enantioselective <i>De Novo</i> Synthesis of α,α‐Diaryl Ketones from Alkynes
作者:Xueting Zhou、Qingqin Huang、Jiami Guo、Lei Dai、Yixin Lu
DOI:10.1002/anie.202310078
日期:2023.11.6
The enantioselective synthesis of α,α-diaryl ketonesfromalkynes through chiral phosphoric acid catalysis is demonstrated. This method also serves as an efficient deuteration method for the preparation of enantiomerically enriched α-deuterated α,α-diaryl ketones. Using the methodology, bioactive molecules, including one of the best-selling anti-breast cancer drugs, tamoxifen, are readily synthesized
Ligand Exchange Reaction of Sulfoxides in Organic Synthesis. A Novel Method for Synthesizing Acetylenes from Carbonyl Compounds through β-Trifluoromethanesulfonyloxy Vinyl Sulfoxides
α-Sulfinyl ketones were prepared by the reaction of alkyl phenylsulfoxide or chloromethyl p-tolyl sulfoxide with aldehydes or methyl esters in high yields, and were converted to acetylenes through β-trifluoromethanesulfonyloxy vinyl sulfoxides by the ligand exchange reaction of the sulfinyl group.