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2005
Carboxylic amides
P 0320
Monomeric Cobalt Oxazoline Palladacycles (COP). Useful Catalysts for Catalytic
Rearrangement of Allylic Trichloroacetimidates. — Planar chiral
12- 072 Asymmetric
complexes (I) are found to be efficient catalysts for the rearrangement of (E)-allylic
imidates (II) and (IV) into the corresponding amides. These products are formed in high
yields and >90% enantioselectivities. (I) are more soluble in solvents of widely varying
polarities than a previously reported analogous chlorine-bridged dimer. This enhanced
solubility allows reactions to be performed at high substrate concentrations with practical catalytic rates being achieved in MeCN using as little as 1 mol% of complex (Ia).
— (KIRSCH, S. F.; OVERMAN*, L. E.; WATSON, M. P.; J. Org. Chem. 69 (2004)
23, 8101-8104; Dep. Chem., Univ. Calif., Irvine, CA 92697, USA; Eng.) — Klein
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