Iridium(III)-Catalyzed Approach for the Synthesis of Fused Arenes: Access to Isoindolines, Indanes, and Dihydroisobenzofurans
作者:Anne-Laure Auvinet、Mehdi Ez-Zoubir、Savinien Bompard、Maxime R. Vitale、Jack A. Brown、Véronique Michelet、Virginie Ratovelomanana-Vidal
DOI:10.1002/cctc.201300068
日期:2013.8
dihydroisobenzofuran derivatives has been developed through the application of a halogen‐bridged iridium(III) complex to the [2+2+2] cycloaddition of α,ω‐diynes with alkynes. The cycloaddition tolerates a broad range of substitution groups, such as alcohol, alkyl, ether, and halogen, and the chemistry can be extended to prepare the corresponding borylated fused arenes. The reaction shows that hindered
Practical and Efficient Iridium Catalysis for Benzannulation: An Entry To Isoindolines
作者:Anne-Laure Auvinet、Mehdi Ez-Zoubir、Maxime R. Vitale、Jack A. Brown、Véronique Michelet、Virginie Ratovelomanana-Vidal
DOI:10.1002/cssc.201200443
日期:2012.10
Iridium(III) catalysis provides a convenient and general method for the synthesis of isoindolines via [2+2+2] cycloaddition reactions of diynes and alkynes. The reaction proceeds smoothly in environmentally benign and non‐distilled isopropyl alcohol, providing highly functionalized aromatic compounds in moderate to excellent yields.
In the presence of 5-10 mol% Cp*RuCI(cod), 1,6- and 1,7-diynes were allowed to react with an ethynylboronate at ambient temperature to give rise to bicyclic arylboronates in 64-93% isolated yields. 1,6-Diynes bearing a boronate terminal also underwent cycloaddition with monoalkynes to give the corresponding bicyclic arylboronates. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis of multiply functionalized benzenes via ruthenium-catalyzed cycloaddition of diiododiynes
作者:Yoshihiko Yamamoto、Kozo Hattori
DOI:10.1016/j.tet.2007.09.086
日期:2008.1
Highly functionalized benzenes were precisely synthesized via multi-step processes consisting of ruthenium-catalyzed [2+2+2] cycloaddition of diiododiynes with an ethynylboronate or terminal alkynes, and subsequent chemo- and regio-selective palladium-catalyzed C-C bond-forming reactions of the resulting cycloadducts. The sequential cycloaddition/coupling process was applied to the synthesis of oligo(p-phenylene ethynylene)s. (c) 2007 Elsevier Ltd. All rights reserved.