REACTION OF SCHIFF BASES ANIONS WITH 4-HALO-2-BUTENOATES : SELECTIVE SYNTHESIS OF α-CYCLOPROPYL AND γ,δ UNSATURATED α-AMINO ACID DERIVATIVES.
Depending on the reaction conditions, anions of imines derived from α-aminoesters react with 4-bromo-2-butenoates to give either cyclopropyl derivatives by an addition-elimination or γ,δ-unsaturated iminoesters by a nucleophilic substitution.
Joucla, M.,Goumzili El, M.,Fouchet, B.
p. 1677 - 1680
(2007/10/02)
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