Enantiomerically enriched triols were treated with trimethyl orthoacetate and pyridinium toluene-p-sulfonate to give a mixture of unrearranged THF and rearranged THP; treatment of the product mixture with toluene-p-sulfonic acid equilibrated the mixture to the THP.
对映体富集的三醇用
原乙酸三甲酯和
甲苯对
磺酸吡啶鎓处理,得到未重排的THF和重排的THP的混合物;用
甲苯-对-
磺酸处理产物混合物使混合物与THP平衡。