A Mild and General One-Pot Synthesis of Densely Functionalized Diaryliodonium Salts
作者:Linlin Qin、Bao Hu、Kiel D. Neumann、Ethan J. Linstad、Katelyenn McCauley、Jordan Veness、Jayson J. Kempinger、Stephen G. DiMagno
DOI:10.1002/ejoc.201500986
日期:2015.9
Diaryliodoniumsalts are powerful and widely used arylating agents in organic chemistry. Here we report a scalable, synthesis of densely functionalized diaryliodoniumsaltsfrom aryl iodides under mild conditions. This two-step, one-pot process has remarkable functional group tolerance, is compatible with commonly employed acid-labile protective group strategies, avoids heavy metal and transition metal
二芳基碘鎓盐是有机化学中强大且广泛使用的芳基化剂。在这里,我们报告了在温和条件下从芳基碘化物大规模合成密集官能化二芳基碘鎓盐的方法。这种两步一锅法具有显着的官能团耐受性,与常用的酸不稳定保护基策略兼容,避免重金属和过渡金属试剂,并为 PET 成像剂的稳定前体提供了直接途径。
Blue LED Irradiation of Iodonium Ylides Gives Diradical Intermediates for Efficient Metal‐free Cyclopropanation with Alkenes
作者:Tristan Chidley、Islam Jameel、Shafa Rizwan、Philippe A. Peixoto、Laurent Pouységu、Stéphane Quideau、W. Scott Hopkins、Graham K. Murphy
DOI:10.1002/anie.201908994
日期:2019.11.18
A facile and highly chemoselective synthesis of doubly activated cyclopropanes is reported where mixtures of alkenes and β-dicarbonyl-derived iodoniumylides are irradiated with light from blue LEDs. This metal-free synthesis gives cyclopropanes in yields up to 96 %, is operative with cyclic and acyclic ylides, and proceeds with a variety of electronically-diverse alkenes. Computational analysis explains
A readily accessible and bench-stable water-soluble hypervalent iodine(III) reagent (phenyliodonio)sulfamate (PISA) with an I–N bond was synthesized, and its structure was characterized by X-ray crystallography. With PISA, various indoles were synthesized via C–H amination of 2-alkenylanilines involving an aryl migration/intramolecular cyclization cascade with excellent regioselectivity in aqueous
Preparation of Heteroaromatic (Aryl)iodonium Imides as I−N Bond-Containing Hypervalent Iodine
作者:Kazuma Ishida、Hideo Togo、Katsuhiko Moriyama
DOI:10.1002/asia.201601349
日期:2016.12.19
Hypervalent iodine(III) compounds containing iodine–nitrogen bonds are very attractive amination reagents in organic synthesis. Heteroaromatic (aryl)iodonium imidescontaining a iodine–nitrogen bond and a hypervalent iodine(III) atom were prepared from heteroarenes, bis(sulfon)imides and (diacetoxyiodo)arenes under mild conditions. These compounds were stable under air and in organic solvents, and
Copper-Catalyzed Indole-Selective C–N Coupling Reaction of Indolyl(2-alkoxy-phenyl)iodonium Imides: Effect of Substituent on Iodoarene as Dummy Ligand
作者:Kazuhiro Watanabe、Katsuhiko Moriyama
DOI:10.1021/acs.joc.8b02676
日期:2018.12.7
A monoalkoxy phenyl group as a dummy ligand on indolyl(aryl)iodonium imides, which is related to the N–I bonding hypervalent iodine(III) compound, for the copper-catalyzed indole-selective C–N coupling reaction was designed to provide 3-bissulfonimido-indole derivatives in high yields. In particular, the use of indolyl(2-butoxylphenyl)iodonium bissulfonimides indicated the high indole selectivity.