The reaction of trifluoroacetaldehyde ethyl hemiacetal or hydrate with an equimolar amount of imine in hexane at reflux temperature for 1 h gave the corresponding β-hydroxy-β-trifluoromethyl ketones in good to excellent yields.
Cornforth, John; Patrick, Vincent A.; White, Allan H., Australian Journal of Chemistry, 1984, vol. 37, # 7, p. 1453 - 1460
作者:Cornforth, John、Patrick, Vincent A.、White, Allan H.
DOI:——
日期:——
The Use of Trifluoroacetaldehyde Ethyl Hemiacetal or Hydrate in a Simple and Practical Regioselective Synthesis of β-Hydroxy-β-trifluoromethyl Ketones from Enamines and Imines
The reaction of trifluoroacetaldehyde ethyl hemiacetal or hydrate with an equimolar amount of enamines, derived from various methylketones, smoothly proceeded to give the corresponding beta-hydroxy-beta-trifluoromethyl ketones in high yields. An equimolar amount of imines derived from various methylketones with aliphatic, aromatic, and heteroaromatic substituents also readily reacted with trifluoroacetaldehyde