199471-98-2Relevant academic research and scientific papers
Palladium-catalyzed chemoselective intramolecular cyclization of 2-bromoaryl alkenenitriles
Deng, Jui-Hui,Tai, Huo-Mu,Yang, Chau-Chen
, p. 327 - 341 (2007/10/03)
The chemoselectivity in the palladium-catalyzed intramolecular cyclization of 2-(o-bromoaryl)alkenenitriles depends on the nature of α-substitutents. 2-(o-Bromoanilino)alkenenitriles attacked the cyano group, followed by the cyano group transposition and
Palladium-catalyzed chemoselective intramolecular cyclization of bromoanilinoalkenenitriles
Yang, Chau-Chen,Tai, Huo-Mu,Sun, Pei-Jiun
, p. 2843 - 2850 (2007/10/03)
α-(o-Bromoanilino)alkenenitriIes 1a-f and 2a-e and α-(N-alkenylamino)-β-(o-bromophenyl)-propanenitriles 7a-c and 8a-c undergo palladium-catalyzed conversion into o-(methylamino)benzonitrile 12, o-[(alkenylamino)ethenyl]benzonitriles 24a-c, N-alkenylanilines 26b, 26c, 3-benzazepines 29a, 29c, 31a and 32a, γ-carbolines 36 and pyrrolo[3,2-b]indole 45. The reactions involve intramolecular additions of arylpalladium to the cyano group and subsequent processes such as cyano group transposition, hydrolysis, electrocyclization, ethyl group transfer and oxidative aromatization. A general mechanism for the palladium-catalyzed arylation of a cyano group is proposed.
