98482-53-2Relevant academic research and scientific papers
Stereochemical Assignments for 1-Phenyl-1,2,3-butanetrione 2-Oxime and Related Compounds
Hansen, John F.,Flippen-Anderson, Judith L.
, p. 3955 - 3956 (2007/10/02)
The 2-oximes of 3-methyl,3-ethyl, and 3-isopropyl-1-phenyl-1,2,3-propanetrione formed by nitrosation of the β-diketones exist preferentially in the Z configuration.For 3-tert-butyl-1-phenyl-1,2,3-propanetrione 2-oxime the (E)- and (Z)- oximes are formed in nearly equal amounts.An explanation for the steric effect of the tert-butyl group is suggested.
