Unexpected Formation of Trifluoromethylated Spiro or Fused Cyclic Compounds from 4-Ethyloxy-1,1,1-trifluoro-3-buten-2-one and Silyl Enol Ethers
作者:Shizheng Zhu、Huiling Jiang
DOI:10.1055/s-2006-941574
日期:2006.6
Two kinds of trifluoromethylated spiro or fused cyclic compounds were synthesized via the unexpected direct alpha,alpha'-dialkylation of (E)-4-ethoxy-1,1,1-trifluoro-3-buten-2-one (1) with silyl enol ethers in the presence of boron trifluoride etherate.