Dimethylformamide → (S)-1-butyloxy-2-hydroxypropane

Participants

Reaction Conditions

Reaction Steps

(S)-1-hydroxy-2-tetrahydropyranyloxypropane (120 g, 0.75 mol) was dropwise added to sodium hydride (44.8 g, 1.87 mol) in THF (400 ml), followed by adding DMF (200 ml), agitating the mixture for 2 hours, dropwise adding to the mixture, butyl bromide (112.4 g, 0.82 mol) at 30° C. or lower, agitating the mixture at room temperature for 6 hours, adding toluene, sufficiently agitating the mixture, washing the resulting organic layer with 2N-NaOH aqueous solution and then with water, drying it over anhydrous magnesium sulfate, distilling off toluene, adding to the resulting oily residue, pyridium p-toluenesulfonate (18 g) and ethanol (500 ml), heating the mixture at 70° C. for one hour, distilling off ethanol, adding toluene to the residue, sufficiently washing the mixture with water, distilling off toluene and distilling the residue to obtain (S)-1-butyloxy-2-hydroxypropane (79.3 g) (b.p. 87° C./35 mmHg) (αD24 =+3.6 (l=1.0 dm neat)).

Provenance & Evidence