Journal of Organic Chemistry p. 3955 - 3956 (1985)
Update date:2022-08-04
Topics:
Hansen, John F.
Flippen-Anderson, Judith L.
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.
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