Hydrochloric Acid → HCID 14750110, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 12.15 g (47.6 mmol) of 4-(t-butyldimethylsiloxymethyl)heptanenitrile in 120 mL of toluene at -70° C., under argon, was added 35.3 mL (53.0 mmol) of a 1.5 M solution of diisobutylaluminum hydride in toluene. After stirring at -70° C. for 3.25 hr, 36.5 mL of methanol was added and the mixture was poured into a mixture of ca. 200 mL of ether, ca. 100 g of ice and 214 mL of 3N hydrogen chloride solution. The aquenous layer was separated and extracted with 3×200 mL of ether. The combined organic layers were washed with 120 mL of saturated sodium bicarbonate solution and 120 mL of saturated brine (a gelatinous precipitate, which resulted on washing with saturated brine, was removed by filtration through celite prior to separation of the aqueous layer), dried (Na2SO4), filtered and concentrated. The residue was purified by column chromatography on silica gel to give 10.01 g (81.4%) of crude 4-(t-butyldimethylsiloxymethyl)heptanal; TLC (SiO2, 1:9 ethyl acetate:hexane) Rf 0.55 (PMA); IR (chloroform): μmax 1719 (aldehyde C=O) cm-1.

Provenance & Evidence