The synthesis of imidazo[1,5-<i>a</i>]quinolines<i>via</i>a decarboxylative cyclization under metal-free conditions
作者:Zicong Yan、Changfeng Wan、Yu Yang、Zhenggen Zha、Zhiyong Wang
DOI:10.1039/c8ra03786h
日期:——
An iodine-mediated decarboxylative cyclization was developed from α-amino acids and 2-methyl quinolines under metal-free conditions, affording a variety of imidazo[1,5-a]quinolines with moderate to good yields.
selenocyanation of imidazo[1,5-a]quinolines with KSeCN under metal catalyst- and chemical oxidant-free conditions. This sustainable strategy shows a broad scope and great compatibility with functional groups, and affords synthetically and biologically important selenocyanated imidazo[1,5-a]quinolines in good to excellent yields with cheap graphite and Ni plates as the electrodes. The gram-scale synthesis was also
Natural α-Amino Acids Applied in the Synthesis of Imidazo[1,5-<i>a</i>]N-heterocycles under Mild Conditions
作者:Qiang Wang、Shuai Zhang、Fengfeng Guo、Baiqun Zhang、Ping Hu、Zhiyong Wang
DOI:10.1021/jo302299u
日期:2012.12.21
A facile iodine-mediated decarboxylative cyclization from alpha-amino acids and N-heterocyclic carbaldehydes was developed. By virtue of this method, a series of imidazo[1,5-a]N-heterocycles can be synthesized efficiently under mild conditions. A tentative reaction mechanism was proposed based on the experimental results and previous reports.
Electrochemical selective divergent C–H chalcogenocyanation of N-heterocyclic scaffolds