Rare earth metal trifluoromethanesulfonates [rare earth metal triflate, RE(OTf)3] were found to be efficient catalyst for benzyl-etherification. In the presence of a catalytic amount of RE(OTf)3, condensation of benzyl alcohols and aliphatic alcohols proceeded smoothly to afford the benzyl ethers. The condensation between benzyl alcohols and thiols also proceeded, and thio ethers were obtained in good yield. In these reactions, RE(OTf)3 could be recovered easily after the reactions were completed and could be reused without loss of activity.
稀土
金属
三氟甲磺酸盐[稀土
金属
三氟甲磺酸酯,RE(OTf)3]被发现是苄基醚化的有效催化剂。在微量RE(OTf)3的催化作用下,
苄醇与
脂肪醇顺利进行缩合反应,生成苄基醚。
苄醇与
硫醇之间的缩合反应也能进行,并以良好产率得到
硫醚。在这些反应中,RE(OTf)3在反应结束后易于回收,且可重复使用而不会损失活性。