Boron trifluoride and indium(III) trifluoromethanesulfonate were found to efficiently catalyse the isomerisation of thionolactones to thiolactones in good yields. When applied to an optically active γ-thionolactone, the isomerisation reaction proceeded with a complete inversion of configuration by using BF3·Et2O.
发现
三氟化硼和三
氟甲烷磺酸铟(III)有效地催化
硫代内酯异构化为
硫代内酯,收率很高。当应用于旋光性γ-
硫代内酯时,异构化反应通过使用BF 3 ·Et 2 O进行构型的完全转化。