2,3,3,3-Tetrafluoropropene (HFO-1234yf) as a CF<sub>3</sub>
-Building Block: Synthesis of Enol Ethers and Vinyl Sulfides
作者:Ben J. Murray、Ellis D. Ball、Antal Harsanyi、Graham Sandford
DOI:10.1002/ejoc.201901445
日期:2019.12.19
there have so far been few reported uses of this fluoroalkene in organic synthesis. Here we report our investigations into nucleophilic substitution reactions of HFO‐1234yf with alkoxide and thiolate derivatives. The regiochemistry of these transformations varies with conditions and we propose these reactions proceed viaaddition‐elimination with reversible formation of a carbanion intermediate. The
TiCl4-promoted cross-coupling reaction of dialkyl 3,3,3-trifluoropropyl acetals for the preparation of CF3-containing functionalized compounds
作者:Feng Hong、Chang-Ming Hu
DOI:10.1039/a702402i
日期:——
The TiCl4-promoted reaction of dialkyl
3,3,3-trifluoropropyl acetals with trimethylsilyl enol ethers to give
γ-trifluoromethyl-β-alkoxy ketones is
described.
A convenient and efficient method for preparing 3,3,3-trifluoropropanoic acid (1) is reported. The starting material is 1-chloro-3,3,3-trifluoropropene (2) that can be easily transformed into 3,3,3-trifluoropropanal dimethylacetal (4) on treatment with methanol and KOH followed by acid-catalyzed addition of methanol. Direct transformation of 4 into 1 was efficiently achieved with 30% aqueous hydrogen
A novel and convenient synthesis of (Z)-3,3,3-trifluoropropenyl alkyl ethers and CF3-substituted propyl acetals as versatile CF3-containing building blocks
作者:Feng Hong、Chang-Ming Hu
DOI:10.1039/cc9960000057
日期:——
A novel and convenient preparation of (Z)-3,3,3-trifluoropropyl alkyl ethers and their further transformation into CF3-substituted propyl acetals is described.