NOVEL REDUCTION OF α-BROMO-α,β-UNSATURATED KETONES. SELECTIVE SYNTHESIS OF β,γ-UNSATURATED KETONES
Treatment of α-bromo-α,β-unsaturated ketones or 1,1-dibromo-2-trimethylsiloxycyclopropanes with diethyl phosphite and triethylamine affords β,γ-unsaturated ketones selectively.