An unusual reaction of cyclic enol ethers with titanium(III) tetrahydroborate

Article abstract of DOI:10.1016/S0040-4020(96)01176-3

Titanium(III) Tetrahydroborate formed in situ from titanium tetrachloride and benzyltriethylammonium tetrahydroborate (1:4) readily reacts with cyclic enol ethers in dichloromethane at -20°C to give the corresponding acyclic diols in high yields after simple aqueous work-up.