Tetrahedron Letters p. 3753 - 3756 (1989)
Update date:2022-08-03
Topics:
Mewshaw, Richard E.
A new method for the preparation of β-chloro and β-bromo-α,β-unsaturated ketones from β-diketones is described.Utilizing Vilsmeier reagents (prepared from N,N-dimethylformamide and oxalyl chloride or oxalyl bromide) β-halo-α,β-unsaturated ketones are isolated in excellent yields.
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