An efficient intermolecular carbonyl-alkyne reductive coupling reaction was realized for the first time by using the system, Sml2-HMPA-hydrogen donor, to give the corresponding allylic alcohols in good yields.
The hydrofluorination of enolizable ynones with AgF in t-BuOH/DMF is reported. The formation of furans as side products can be suppressed using 2,2′-biphenol. The corresponding β-fluoroenones were obtained with good Z-selectivity. A variety of functional groups are tolerated. β-Fluoroenones are vinylogous acid fluorides whose hydrolysis to vinylogous acids can be avoided under the reported reaction