Transition-Metal-Free Decarboxylative Iodination: New Routes for Decarboxylative Oxidative Cross-Couplings
作者:Gregory J. P. Perry、Jacob M. Quibell、Adyasha Panigrahi、Igor Larrosa
DOI:10.1021/jacs.7b05155
日期:2017.8.23
its application to oxidative cross-couplings of aromatics via decarboxylative/C–H or double decarboxylative activations that use I2 as the terminal oxidant. This strategy allows the preparation of biaryls previously inaccessible via decarboxylative methods and holds other advantages over existing decarboxylative oxidative couplings, as stoichiometric transition metals are avoided.
Synthetic Use of 1-(<i>p</i>-Toluenesulfonyloxy)-1,2-benziodoxol-3(1<i>H</i>)-one: Iodination of Aromatic Rings
作者:Takahito Muraki、Hideo Togo、Masataka Yokoyama
DOI:10.1055/s-1998-1639
日期:1998.3
Treatment of various aromatic compounds with 1-(p-toluenesulfonyloxy)-1,2-benziodoxol-3(1H)-one 1A and iodine gave the corresponding iodinated compounds in good yields. Similarly, chlorination and bromination proceeded effectively. As compared with other trivalent iodine compounds, the iodinane 1A showed the best reactivity as a halogenation reagent.
Iodine/Palladium Approaches to the Synthesis of Polyheterocyclic Compounds
作者:Saurabh Mehta、Richard C. Larock
DOI:10.1021/jo902639f
日期:2010.3.5
A simple, straightforward strategy for the synthesis of polyheterocyclic compounds (PHCs) is reported, which involves iterative cycles of palladium-catalyzed Sonogashira coupling, followed by iodocyclization using I2 or ICl. A variety of heterocyclic units, including benzofurans, benzothiophenes, indoles, and isocoumarins, can be efficiently incorporated under mild reaction conditions. In addition
报道了一种简单、直接的合成多杂环化合物 (PHC) 的策略,该策略涉及钯催化的 Sonogashira 偶联的迭代循环,然后使用 I 2或 ICl进行碘环化。多种杂环单元,包括苯并呋喃、苯并噻吩、吲哚和异香豆素,可以在温和的反应条件下有效地结合。此外,这种策略的变体提供了各种连接和融合的 PHC。
Facile Synthesis of Diiodoheteroindenes and Understanding Their Sonogashira Cross-Coupling Selectivity for the Construction of Unsymmetrical Enediynes
作者:Alexander V. Ponomarev、Natalia Danilkina、Julia S. Okuneva、Aleksandra A. Vidyakina、Ekaterina A. Khmelevskaya、Alexander Bunev、Andrey M Rumyantsev、Anastasia I Govdi、Thomas Suarez、Igor Alabugin、Irina Balova
DOI:10.1039/d4ob00530a
日期:——
benzothiophene can be conveniently involved in a one-pot sequentialcoupling with two different alkynes, yielding unsymmetrical benzothiophene-fused enediynes. On the other hand, the Sonogashira reaction of diiodoindole and diiodobenzofuran formed considerable amounts of di-substituted enediynes in addition to the monoalkyne product by coupling at C2. Interestingly, no C3-monocoupling products were observed