Copper-catalyzed C-C coupling and cyclization: Synthesis of benzo[4,5]imidazo[1,2-a]pyridines and benzo[4,5]imidazo[2,1-a]isoquinolines

Autor: Chan Sik Cho, Byeong Woo Yang, Nam Sik Yoon, Pham Duy Quang Dao
Rok vydání: 2017
Předmět:
Zdroj: Journal of Organometallic Chemistry. 851:136-142
ISSN: 0022-328X
Popis: 2-(2-Bromovinyl)benzimidazoles are coupled and cyclized with 1,3-diketones in DMF in the presence of a catalytic amount of copper(I) iodide and a base to afford the corresponding benzo[4,5]imidazo[1,2-a]pyridines in moderate yields. 2-(2-Bromoaryl)benzimidazoles also react with 1,3-diketones under similar reaction conditions to give benzo[4,5]imidazo[2,1-a]isoquinolines in similar yields.
Databáze: OpenAIRE