Asymmetric synthesis of tetrahydropyrans with competitive [1,2]-phenylsulfanyl (PhS) migrations
作者:Lorenzo Caggiano、David J. Fox、David House、Zoe A. Jones、Fraser Kerr、Stuart Warren
DOI:10.1039/b208557g
日期:2002.11.26
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.