Lithium triflate (LiOTf) catalyzed efficient and chemoselective tetrahydropyranylation of alcohols and phenols under mild and neutral reaction conditions
作者:Babak Karimi、Jafar Maleki
DOI:10.1016/s0040-4039(02)00892-4
日期:2002.7
Different types of alcohols and phenols were effectively converted to the corresponding THP ethers in the presence of DHP and a catalytic amount of lithium trifluoromethanesulfonate (LiOTf) in refluxing 1,2-dichloroethane under essentially neutral reaction conditions. The method also shows good chemoselectivity for mono-tetrahydropyranylation of symmetrical diols.
在DHP和催化量的三氟甲烷磺酸锂(LiOTf)的存在下,在基本中性的反应条件下,将不同类型的醇和酚有效地转化为相应的THP醚。该方法对对称二醇的单四氢吡喃基化反应也显示出良好的化学选择性。