Lewis Acid-Catalyzed Additions of (Benzotriazol-1-yl)diethoxymethane to Enol Ethers and Enamides. New Syntheses of β-Alkoxyalkanal and β-Aminoalkanal Acetals
作者:Alan R. Katritzky、Sergei A. Belyakov、Bogumila Rachwal、Jean-Luc Moutou
DOI:10.1021/jo9612335
日期:1997.2.1
Addition of (benzotriazol-1-yl)diethoxymethane 11 to various acyclic and cyclic enol ethers and enamides produces the corresponding adducts, which were reacted with either NaAlH4 or Grignard reagents to afford acyclic acetal-ethers (18a-f), cyclic alpha-(substituted)-beta-acetals (19a-c), amino-acetals (24a,b), and 1,3-amino-ethers (25), all known but previously difficult-to-access classes of compounds.