Concentrated sulfuric acid promoted the intramolecular dehydration and 1,3-sulfanyl migration of 1,1,1-trifluoro-4,4-bis(arylthio)butane-2,2-diol; this afforded, in addition to the expected unsaturated ketone, an unexpected trifluoromethyl-containing bridged heterocycle.
浓
硫酸促进了1,1,1-三
氟-4,4-双(芳基
硫)
丁烷-2,2
-二醇的分子内脱
水和1,3-
硫迁移;这种反应除了得到预期的非饱和酮外,还意外获得了一种含有三
氟甲基的桥接杂环。