posted on 1999-10-17, 00:00authored byDiego A. Alonso, Sofia J. M. Nordin, Pher G. Andersson
A highly diastereoselective reaction of 2-azanorbornyl enolates with electrophiles has been studied. Deprotonation of 4 with LDA at low
temperature affords the corresponding exocyclic lithium enolate 5, which reacts with different electrophiles such as alkyl halides, aldehydes
and acyl chlorides to give the corresponding <i>exo</i> addition products 6. The products are formed in good yields and with diastereoselectivities
above 95%.