8-Oxabicyclo[3.2.1]oct-6-en-3-ones 3 with a quaternary centre adjacent to the carbonyl group have been converted into 6-hydroxy-2,4-cycloheptadien-1-ones 1 with zirconium tetrachloride/piperidine (1:1).
具有与羰基相邻的季中心的8-氧杂双环[3.2.1] oct-6-en-3-ones 3已用四
氯化
锆/
哌啶转化为6-羟基-2,4-环庚二烯-1-ones 1(1:1)。