A facile and rapid one-step synthesis of 8-substituted xanthine derivatives via tandem ring closure at room temperature
作者:Prabal Bandyopadhyay、Sumit K. Agrawal、Manisha Sathe、Pratibha Sharma、M.P. Kaushik
DOI:10.1016/j.tet.2012.03.050
日期:2012.5
N-Bromo succinimide (NBS) was found to be an efficient and regioselective reagent in combination with AIBN for an unprecedented, facile and rapid one-step synthesis of 8-substituted xanthine derivatives at room temperature. The inexpensive, nontoxic and readily available NBSefficiently promoted the condensation of several aryl/cycloaryl/heteroaryl aldehydes with 5,6-diamino-1,3-dimethyluracils in