Facile Preparation of Unsymmetrical Diaryl Ethers from Unsymmetrical Diaryliodonium Tosylates and Phenols with High Regioselectivity
作者:Hideo Togo、Yohji Kakinuma、Katsuhiko Moriyama
DOI:10.1055/s-0032-1316824
日期:——
Abstract Unsymmetrical diaryl ethers were efficiently obtained in good yields by the reactions of aryl(4-methoxyphenyl)iodonium tosylates with phenols, and aryl(2,4-dimethoxyphenyl)iodonium tosylates with phenols, in the presence of potassium carbonate in acetonitrile, respectively. The latter iodonium tosylates provided the corresponding unsymmetrical diaryl ethers in good yields with high regioselectivities
摘要 在碳酸钾存在下,分别在甲苯中存在碳酸钾的情况下,通过芳基(4-甲氧基苯基)碘化甲苯磺酸盐与苯酚反应,以及芳基(2,4-二甲氧基苯基)碘化甲苯磺酸盐与苯酚反应,可以高收率高效地获得不对称二芳基醚。后者的甲苯磺酸碘鎓盐以高收率提供了相应的不对称二芳基醚,具有高的区域选择性,并定量形成了1-碘-2,4-二甲氧基苯。 在碳酸钾存在下,分别在甲苯中存在碳酸钾的情况下,通过芳基(4-甲氧基苯基)碘化甲苯磺酸盐与苯酚反应,以及芳基(2,4-二甲氧基苯基)碘化甲苯磺酸盐与苯酚反应,可以高收率高效地获得不对称二芳基醚。后者的甲苯磺酸碘鎓盐以高收率提供了相应的不对称二芳基醚,具有高的区域选择性,并定量形成了1-碘-2,4-二甲氧基苯。