Preparation of 2-Ethoxy-3-hydroxy-4-(perfluoroalkyl)tetrahydropyran Derivatives from Substituted 4-Ethoxybut-3-en-1-ols
作者:Stig Valdersnes、Leiv K. Sydnes
DOI:10.1002/ejoc.200900687
日期:2009.11
as the only product, 6-substituted and 6,6-disubstituted 2-ethoxy-4-(perfluoroalkyl)tetrahydropyran-3-ones in 77–100 % yield as stereoisomeric mixtures. Subsequent reduction of the keto group with sodium borohydride in ethanol was uneventful and completed the syntheses of a range of 4-perfluorobutylated tetrahydropyranderivatives; the yields in this step were in the 81–94 % range. The best result was