Mild and Highly Selective Ultrasound-Promoted Zinc/Acetic Acid Reduction of C=C Bonds in α,β-Unsaturated γ-Dicarbonyl Compounds
作者:Alan P. Marchand、G. Madhusudhan Reddy
DOI:10.1055/s-1991-26417
日期:——
Sonication of various, α,β-unsaturated γ-diketones, quinones, α,β-unsaturated γ-diacids or γ-diesters with powdered zinc and acetic acid at room temperature results in selective reduction of the C = C bond in each case within ca. 5 minutes to 2.5 h and affords the corresponding reduction products in yields of 94-100 %. Isolated (i.e., nonconjugated) C = C bonds are not affected by zinc/acetic acid under these conditions.