The development of new methodologies for an efficient introduction of CF3 groups into complex molecules constitutes one of the most challenging tasks of modern organic chemistry. Recently, we reported the access to a new class of electrophilic CF3-transfer reagents
based on hypervalent iodine. The versatile application of these reagents to C-centred nucleophiles, such as ?-keto esters, silyl enol ethers and ?-nitro esters, as well as to thiols and primary and secondary phosphines is described. Experiments with phenols afforded corresponding
trifluomethylethers in very low yields.
新方法学的发展,有效地将三氟甲基基团引入复杂分子中,构成了现代有机化学中最具挑战性的任务之一。最近,我们报道了一种基于高价碘的新型亲电性三氟甲基转移试剂的获取。描述了这些试剂对碳中心亲核试剂(如α-酮酸酯、硅烯醇醚和α-硝基酯)以及对硫醇和一、二级膦的多功能应用。与酚的实验得到了相应的三氟甲基醚,但收率非常低。