Journal of the American Chemical Society

Electrophilic azide transfer to chiral enolates. A general approach to the asymmetric synthesis of. alpha.-amino acids

DA Evans, TC Britton

Index: Evans, David A.; Britton, Thomas C. Journal of the American Chemical Society, 1987 ,  vol. 109,  # 22  p. 6881 - 6883

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Citation Number: 128

Abstract

The iron atom is bonded to four carbons of the methylenecyclopropene ligand and three carbonyl groups. It is noteworthy that both r (C1C2)(1.479 A) and r (C3C4)(1.397 A)(to a lesser extent) are elongated by comparing with the corresponding bonds of 1 (1.323 and 1.332 A, respectively) as determined by microwave spectra. 3c In contrast, the analogous bond distances in r (CIC3)