REDUCTION OF ACROLEIN DIALKYL ACETALS WITH CrCl2. γ-ALKOXY SUBSTITUTED ALLYLIC CHROMIUM REAGENTS FOR SELECTIVE SYNTHESIS OF erythro-1,2-DIOLS.

Article abstract of DOI:10.1016/S0040-4039(00)80732-7

Treatment of an aldehyde in THF at -30 deg C with a reagent derived by reduction of acrolein dialkyl acetal with CrCl2 in the presence of Me3SiI gave 1,2-erythro-3,4-butene-1,2-diol derivatives selectively.