Cerium(IV) sulfate tetrahydrate: a catalytic and highly chemoselective deprotection of THP, MOM, and BOM ethers
作者:Davir González-Calderón、Carlos A. González-González、Aydeé Fuentes-Benítez、Erick Cuevas-Yáñez、David Corona-Becerril、Carlos González-Romero
DOI:10.1016/j.tetlet.2013.10.117
日期:2013.12
methoxymethyl (MOM), and benzyloxymethyl (BOM) phenyl/alkyl ethers were efficiently cleaved to the corresponding parent hydroxyl compounds in good yields using catalytic amounts of Ce(SO4)2·4H2O by microwave-assisted or conventional heating in methanol solution. Intramolecular and competitive experiments demonstrated the chemoselective deprotection of THP ethers in the presence of triisopropylsilyl (TIPS)
四氢吡喃基(THP),甲氧基甲基(MOM)和苄氧基甲基(BOM)苯基/烷基醚通过微波辅助催化作用或催化量的Ce(SO 4)2 ·4H 2 O被有效地裂解成相应的母体羟基化合物。常规在甲醇溶液中加热。分子内和竞争实验表明,在三异丙基甲硅烷基(TIPS)和叔丁基二苯基甲硅烷基(TBDPS)苯基醚存在下,THP醚的化学选择性脱保护。