Direct Trifluoromethylation of Alcohols Using a Hypervalent Iodosulfoximine Reagent
作者:Jorna Kalim、Thibaut Duhail、Ewa Pietrasiak、Elsa Anselmi、Emmanuel Magnier、Antonio Togni
DOI:10.1002/chem.202005104
日期:2021.2.5
direct trifluoromethylation of a variety of aliphatic alcohols using a hypervalent iodosulfoximine reagent afforded the corresponding ethers in moderate to good yields (14–72 %). Primary, secondary, and even tertiary alcohols, including examples derived from natural products, underwent this transformation in the presence of catalytic amounts of zinc bis(triflimide). Typical reaction conditions involved
使用高价碘亚磺酰亚胺试剂对各种脂肪醇进行直接三氟甲基化,可以以中等至良好的收率(14-72%)提供相应的醚。伯,仲,甚至叔醇,包括衍生自天然产物的实例,在催化量的双(三氟酰亚胺)锌存在下进行了这种转化。典型的反应条件包括6.0当量的醇与1.0当量的试剂的纯净混合物,大多数反应在2小时内用2.5 mol%的路易斯酸催化剂完成。此外,提供了实验证据表明,通过醇与碘原子的配位以及随后的还原消除,可以形成C-O键。