Synthesis of β- and γ-Carbolines by the Palladium-Catalyzed Iminoannulation of Internal Alkynes
摘要:
[GRAPHICS]A variety of substituted beta- and gamma -carbolines have been prepared in good to excellent yields by the annulation of internal acetylenes by the tert-butylimines of N-substituted 3-iodoindole-2-carboxaldehydes and 2-haloindole-3-carboxaldehydes, respectively, in the presence of a palladium catalyst.
Synthesis of β- and γ-Carbolines by the Palladium-Catalyzed Iminoannulation of Internal Alkynes
摘要:
[GRAPHICS]A variety of substituted beta- and gamma -carbolines have been prepared in good to excellent yields by the annulation of internal acetylenes by the tert-butylimines of N-substituted 3-iodoindole-2-carboxaldehydes and 2-haloindole-3-carboxaldehydes, respectively, in the presence of a palladium catalyst.
Pd(II)-Catalyzed Synthesis of Carbolines by Iminoannulation of Internal Alkynes via Direct C−H Bond Cleavage Using Dioxygen as Oxidant
作者:Shengtao Ding、Zhuangzhi Shi、Ning Jiao
DOI:10.1021/ol100272s
日期:2010.4.2
A palladium-catalyzed iminoannulation of internal alkynes via direct C−H bond cleavage was developed. Dioxygen was employed as a clean oxidant in this kind of catalysis. Carbolines were synthesized from tert-butylimines of N-substituted indole-2-carboxaldehydes or indole-3-carboxaldehydes.
Synthesis of <i>β</i>- and <i>γ</i>-Carbolines by the Palladium-Catalyzed Iminoannulation of Internal Alkynes
作者:Haiming Zhang、Richard C. Larock
DOI:10.1021/ol010124w
日期:2001.10.1
[GRAPHICS]A variety of substituted beta- and gamma -carbolines have been prepared in good to excellent yields by the annulation of internal acetylenes by the tert-butylimines of N-substituted 3-iodoindole-2-carboxaldehydes and 2-haloindole-3-carboxaldehydes, respectively, in the presence of a palladium catalyst.