At Last, 1,10-Phenanthroline-N,N'-dioxide, A New Type of Helicene, has been Synthesized using HOF small middle dotCH(3)CN.

@article{Rozen1999AtL1,
  title={At Last, 1,10-Phenanthroline-N,N'-dioxide, A New Type of Helicene, has been Synthesized using HOF small middle dotCH(3)CN.},
  author={Rozen and Dayan},
  journal={Angewandte Chemie},
  year={1999},
  volume={38 23},
  pages={3471-3473}
}
For more than 50 years the synthesis of 1,10-phenanthroline-N,N'-dioxide (2) has been sought. The reason for the failure of all the earlier attempts is that the limited space in the bay area of the starting material 1,10-phenanthroline (1) cannot accommodate two oxygen atoms. The oxidation has now been achieved with the oxygen-transfer agent HOF small… CONTINUE READING