Copper(II)-Catalyzed Carbon–Carbon Triple Bond Cleavage of Internal Alkynes for the Synthesis of Annulated Indolizines
作者:Jinwei Sun、Fuyao Wang、Huayou Hu、Xiangshan Wang、Hui Wu、Yun Liu
DOI:10.1021/jo500456d
日期:2014.5.2
Cleavage of C≡C bond in butynedioates via copper(II)-catalyzed reaction has been achieved, leading to the synthesis of benzo[f]pyrido[1,2-a]indole-6,11-diones in high yields by one-pot three-component reactions. In this unprecedented C≡C bond cleavage reaction of internal alkynes, both fragments from the alkyne are successively incorporated into the products.
通过铜(II)催化的反应实现了对丁炔中C≡C键的裂解,从而导致高收率的苯并[ f ]吡啶并[1,2- a ]吲哚-6,11-二酮的单-合成。锅三成分反应。在内部炔烃的这种前所未有的C≡C键裂解反应中,来自炔烃的两个片段均先后结合到产物中。
Copper(II)-Catalyzed Synthesis of Benzo[<i>f</i>]pyrido[1,2-<i>a</i>]indole-6,11-dione Derivatives via Naphthoquinone Difunctionalization Reaction
作者:Yun Liu、Jin-Wei Sun
DOI:10.1021/jo2023312
日期:2012.1.20
and pyridine (or isoquinoline) via sp2–C–H difunctionalization of naphthoquinone followed by intramolecular cyclization and oxidative aromatization. In an attempt to expand the reaction scope and to help clarify the reaction mechanism, 1,3-dicarbonyl compounds are used in place of acyl bromides to take part in this reaction, and the benzo[f]pyrido[1,2-a]indole-6,11-diones derivatives are also obtained
苯并[ f ]吡啶基[1,2 - a ]吲哚-6,11-二酮通过铜(II)催化的酰基溴,1,4-萘醌和吡啶的三组分反应(或异喹啉)通过萘醌的sp 2 -CH双官能化,然后进行分子内环化和氧化芳构化。为了扩大反应范围并澄清反应机理,使用1,3-二羰基化合物代替酰基溴参与了该反应,并使用了苯并[ f ]吡啶基[1,2- a ]还以优异的产率获得了吲哚-6,11-二酮衍生物。