Heteroannulation of nitroketene N,S-arylaminoacetals with POCl3: a novel highly regioselective synthesis of unsymmetrical 2,3-substituted quinoxalines.

@article{Venkatesh2005HeteroannulationON,
  title={Heteroannulation of nitroketene N,S-arylaminoacetals with POCl3: a novel highly regioselective synthesis of unsymmetrical 2,3-substituted quinoxalines.},
  author={Challa Venkatesh and Bhawana Komal Singh and Poulami Mahata and Hiriyakkanavar Ila and Hiriyakkanavar Junjappa},
  journal={Organic letters},
  year={2005},
  volume={7 11},
  pages={
          2169-72
        }
}
[reaction: see text]. A novel regioselective route for the synthesis of substituted and fused 3-chloro-2-(methylthio)quinoxalines through POCl3-mediated heteroannulation of a range of alpha-nitroketene N,S-anilinoacetals has been reported. 
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