Direct conversion of alcohol silyl ethers into the corresponding tetrahydropyranyl (THP) ethers can be easily performed by reaction with THP acetate under the influence of a catalytic amount of tert-butyldimethylsilyl trifluoromethanesulfonate (TBSOTf). Aliphatic TBS ether can be selectively transformed into the corresponding THP ether in the presence of phenolic TBS ether.
在一定量的
三氟甲磺酸叔丁基二甲基
硅烷(TBSOTf)催化剂的作用下,通过与
乙酸四氢吡喃酯(THP)反应,可以很容易地将醇
硅醚直接转化为相应的
四氢吡喃(THP)醚。脂肪族 TBS 醚可在
酚类 TBS 醚的存在下选择性地转化为相应的 THP 醚。