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  • Asymmetric electrophilic amination of various carbon nucleophiles with enantiomerically pure chiral N-h oxaziridines derived from camphor and fenchone.

Asymmetric electrophilic amination of various carbon nucleophiles with enantiomerically pure chiral N-h oxaziridines derived from camphor and fenchone.

The Journal of organic chemistry (2002-10-26)
Philip C Bulman Page, Corinne Limousin, Victor L Murrell
ABSTRACT

The first two stable enantiomerically pure chiral N-H oxaziridines, derived from camphor and fenchone, are shown to act as electrophilic sources of nitrogen upon reaction with various carbon nucleophiles. Nitrogen is transferred, together with the camphor/fenchone unit, when deprotonated esters, malonates, and nitriles are used as nucleophiles. One of the ester or nitrile units in the substrate usually undergoes hydrolysis; a cyclic mechanism is proposed to account for this observation.

MATERIALS
Product Number
Brand
Product Description

Supelco
(+)-Fenchone, analytical standard
Sigma-Aldrich
(+)-Fenchone, purum, ≥98.0% (sum of enantiomers, GC)
Sigma-Aldrich
L-Fenchone, ≥98%
Sigma-Aldrich
(1R)-(−)-Fenchone, ≥98%