N-(2-nitrophenyl)proline: An intramolecular hydrogen bond forming reagent for the determination of the absolute configuration of primary amines

Hee Choon Ahn, Kihang Choi

Research output: Contribution to journalArticle

20 Citations (Scopus)


N-(2-Nitrophenyl)proline (2-NPP) amides of primary amines have a conformational preference for intramolecular hydrogen bonding. Because of the strong and selective anisotropic effects on the amine substituents, the absolute configuration of α-chiral primary amines can be assigned by comparing the 1H chemical shifts of diastereomeric 2-NPP amides.

Original languageEnglish
Pages (from-to)3853-3855
Number of pages3
JournalOrganic Letters
Issue number19
Publication statusPublished - 2007 Sep 13


ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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