@article{HellerHerdeis1993,
  author    = {Eberhard Heller and Claus Herdeis},
  title     = {Synthesis of 2S,5S- and 2R,5S-5-Hydroxypipecolic Acid via Amide-Methylenation of S-5-Hydroxy-2-piperidone with Dimethyltitanocene},
  year      = {1993},
}