One-Pot Tandem Synthesis of 2-Arylbenzoxazole Derivatives via Copper-Catalyzed CN and CO Bond Formation
作者:Veerababurao Kavala、Donala Janreddy、Mustafa J. Raihan、Chun-Wei Kuo、Chintakunta Ramesh、Ching-Fa Yao
DOI:10.1002/adsc.201200164
日期:2012.8.13
nucleophiles resulted in the formation of benzoxazole derivatives. This procedure involves copper-catalyzedone-pottandem CN/CO coupling reactions. No ligand was used in the reaction, even in the cases of primary or secondary amides, which were used as N-nucleophiles. However, L-proline was used as ligand in the case of N-aromatic heterocycles like indole, imidazole and pyrazole derivatives.