Y. Matsumura et al., DIASTEREOSELECTIVE CYCLOPROPANATION UTILIZING A NEW CHIRAL N,O-ACETALS PREPARED BY ELECTROCHEMICAL OXIDATION OF CARBAMATES, Journal of the Chinese Chemical Society, 45(2), 1998, pp. 297-302
A new chiral bicyclic tetrahydropyridine derivative was synthesized fr
om L-lysine derivatives utilizing electrochemical oxidation as a key s
tep. Allyl alcohols were incorporated into the tetrahydropyridine deri
vative to afford N,O-acetals, and the reaction of the resulting N,O-ac
etals with a carbenoid, which was generated from Et2Zn and CH2I3, yiel
ded cyclopropanated products in moderate diastereoselectivities.