@article{pilli_böckelmann_alves_2002,  title={The Stereochemistry of the Addition of Chlorotitanium Enolates of N-Acyl Oxazolidin-2-ones to 5- and 6- Membered N-Acyliminium Ions},  volume={13},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532002000100021},  DOI={10.1590/S0103-50532002000100021},  number={1},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Pilli, Ronaldo A. and Böckelmann, Maria Alice and Alves, Conceição de Fatima},  year={2002},  month={Jan},  pages={124–124} }