Dichloromethane → HCID 10867393, compound

Participants

Reaction Steps

To a 50 ml round bottom flask was introduced 200 mg (0.86 mmol) of methyl (S)-3-t-butyldimethylsilyloxybutanoate, to which was added 2.5 ml dry CH2Cl2. The reaction was stirred in a dry ice/acetone bath, and 1.72 ml (2 eq.) of 1M diisobutylaluminum hydride in toluene was added dropwise. After stirring for 1 hour at -78° C., the reaction was quenched with 2 ml of MeOH and warmed to room temperature. The reaction was diluted with 25 ml of CH2Cl2 and 8 ml saturated aq. potassium sodium tartrate was added. The organic layer was separated and dried over MgSO4 and the solvent was removed under reduced pressure. Thin layer chromatography using 10% ethyl acetate in hexane showed complete and clean conversion to a lower Rf spot. This afforded 170 mg (98%) of the product, (S)-3-t-butyldimethylsilyloxybutanal, which was used without purification to avoid racemization.

Provenance & Evidence