A transition metal‐free approach for the N‐arylation of amino acid derivatives has been developed. Key to this method is the use of unsymmetricdiaryliodoniumsalts with anisyl ligands, which proved important to obtain high chemoselectivity and yields. The scope includes the transfer of both electron deficient, electron rich and sterically hindered aryl groups with a variety of different functional
A phosgene‐ and metal‐free synthesis of O‐aryl carbamates is realized through a three‐component coupling of carbondioxide, amines and diaryliodoniumsalts. The reaction only requires a base as the promoter, providing access to a diverse array of O‐aryl carbamates in moderate to high yields with excellent chemoselectivity.
A practical, metal-free, and highly chemoselective approach was developed for the synthesis of ortho-CHO diaryl ethers by a three-component sequential coupling of arynes, N,N-dimethylformamide (DMF), and diaryliodoniumsalts. Diverse functional groups including halo, nitryl, and bulky substituents and heteroaromatics are well tolerated. Mechanistically, isotopic tracer experiments reveal that the diaryliodonium
azoles with diaryliodonium salts to access 2-aryl-5-substituted-tetrazoles. Diaryliodonium salts with a wide range of both electron-rich and previously challenged electron-deficient aryl groups are applicable in this method. Diversely functionalized tetrazoles are tolerable also. We have devised a one-pot system to synthesize 2,5-diaryl-tetrazoles directly from nitriles. The synthetic utility of this
我们描述了一种简单的、无金属的区域选择性 N 2 -芳基化策略,用于 5-取代-1 H-四唑与二芳基碘鎓盐来获得 2-芳基-5-取代四唑。具有广泛的富电子和先前挑战的缺电子芳基的二芳基碘鎓盐适用于该方法。不同官能化的四唑也是可以接受的。我们设计了一种直接从腈类合成 2,5-二芳基-四唑的一锅法系统。该方法的合成效用进一步扩展到两种生物活性分子的后期芳基化。
Direct Arylation of Arene and <i>N</i>-Heteroarenes with Diaryliodonium Salts without the Use of Transition Metal Catalyst
A novel and simple transition metal-free direct arylation of arene and N-heteroarenes with diaryliodonium salts has been developed. This cross-coupling reaction is promoted only by base and gives the desired products in moderate to good yields.