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
(diacetoxyiodo)-arenes, ArI(OAc)2, or iodylarenes, ArIO2, from the corresponding iodoarenes, ArI, using sodium periodate as the oxidant are presented in this paper. In order to obtain 2- and 4-iodylbenzoic acids, the respective sodium salts of 2- and 4-iodobenzoic acids should be used as the starting substrates, because mixtures containing the corresponding iodosyl derivatives as the main products
Synthesis-Guided Structure Revision of the Sarcodonin, Sarcoviolin, and Hydnellin Natural Product Family
作者:David W. Lin、Takeshi Masuda、Moritz B. Biskup、Jonathan D. Nelson、Phil S. Baran
DOI:10.1021/jo102228j
日期:2011.2.18
extensive studies aimed at their chemical synthesis. Key features of revised structure 1b include replacement of the N,N-dioxide moiety with an oxime, ring-opening of the central diketopiperazine, and transposition of the terphenyl wing from the 1β−2β position of 1a to the 2β−3β position of 1b. This structure revision arose from the serendipitous synthesis of a benzodioxane aminal (44) whose structure
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Alkoxyphenyliminoiodanes: Highly Efficient Reagents for the Catalytic Aziridination of Alkenes and the Metal‐Free Amination of Organic Substrates
作者:Akira Yoshimura、Victor N. Nemykin、Viktor V. Zhdankin
DOI:10.1002/chem.201102265
日期:2011.9.12
Owing to the presence of the ortho‐substituent on the phenyl ring, these new iminoiodanes have excellent solubility in organic solvents and are efficient reagents for the catalytic aziridination of alkenes or the metal‐free tosylamination of organic substrates (see scheme, Ts=tosyl).