Enantioselective synthesis of cis-3-fluoropiperidin-4-ol, a building block for medicinal chemistry

J Org Chem. 2013 Sep 6;78(17):8892-7. doi: 10.1021/jo401352z. Epub 2013 Aug 19.

Abstract

The first enantioselective route to both enantiomers of cis-1-Boc-3-fluoropiperidin-4-ol, a highly prized building block for medicinal chemistry, is reported. An enantioselective fluorination is employed, taking advantage of the methodology reported by MacMillan, which uses a modified cinchona alkaloid catalyst. In studying the fluorination reaction, we have shown that the catalyst can be replaced by commercially available primary amines, including α-methylbenzylamine, with similar levels of enantioselectivity. The piperidinols are readily crystallized to obtain enantiopure material.

MeSH terms

  • Amines / chemistry*
  • Chemistry, Pharmaceutical
  • Crystallography, X-Ray
  • Models, Molecular
  • Molecular Structure
  • Piperidines / chemical synthesis*
  • Piperidines / chemistry
  • Stereoisomerism

Substances

  • 1-tert-butyloxycarbonyl-3-fluoropiperidin-4-ol
  • Amines
  • Piperidines