An Efficient Catalyst Free Synthesis of Nitrogen Containing Spiro Heterocycles via [5 + 1] Double Michael Addition Reaction.

@inproceedings{Aggarwal2014AnEC,
  title={An Efficient Catalyst Free Synthesis of Nitrogen Containing Spiro Heterocycles via [5 + 1] Double Michael Addition Reaction.},
  author={Komal Aggarwal and Kanika Vij and J. M. Khurana},
  year={2014}
}
A facile protocol is developed for the double Michael addition of pentadienones (II) with barbituric acid derivatives to give diazaspiro compounds in good yields and short reaction times.