Towards the Syntheses of α-Trifluoromethylated Oxygenated Heterocycles and Their Precursors
作者:Thierry Billard、Steven Harthong、Bernard Langlois
DOI:10.1055/s-2005-872076
日期:——
The possibilities of synthesizing various α-trifluoromethylated oxygenated heterocycles, starting from trifluoroacetaldehyde methyl hemiacetal, through classic cyclization reactions, have been demonstrated. In this way, six-membered cyclic compounds, δ-lactones and also macrolactones, bearing a CF3 group in a position α to the oxygen could be easily obtained through a RCM reaction. Bicyclic compounds could be also synthesized by an intramolecular Pauson-Khand reaction.
从三氟乙醛缩甲醛出发,通过经典的环化反应合成各种α-三氟甲基化氧杂环的可能性已被证明。通过这种方式,可以轻松地通过环加成反应获得具有氧α位的CF3基团的六元环状化合物、δ-内酯以及大环内酯。双环化合物也可以通过分子内Pauson-Khand反应来合成。