A Novel Method for the Preparation of 2-Hydroxyiminocarboxylic Acid Esters. Cobalt(II) Catalyzed α-Oximation of α,β-Unsaturated Esters with Butyl Nitrite and Phenylsilane

Article abstract of DOI:10.1246/cl.1990.1917

Various α,β-unsaturated esters are directly converted to the corresponding 2-hydroxyiminocarboxylic acid esters with butyl nitrite and phenylsilane in high yields by use of N,N'-bis(2-ethoxycarbonyl-3-oxobutylidene)ethylenediaminato cobalt(II) complex as