2,6-Lutidine → 4-Decylbenzaldehyde

Participants

Reaction Steps

Rosenmund Reduction--Hydrogenate a mixture of 4-(n-decyl)benzoyl chloride (28 g., 0.1 mol), 10% palladium on carbon (2 g.), 2,6-lutidine (10.9 g., dried over KOH and distilled), and tetrahydrofuran (THF) (300 ml., distilled from LiAlH4) in a Paar apparatus for 30 min. at 25° C. under an H2 atmosphere (62 psi). Filter the resulting mixture and collect the catalyst. Wash the catalyst with THF. Evaporate the filtrate and partition the residue between diethyl ether and H2O. Wash the combined organic solutions with aqueous HCl (0.1N) and NaHCO3 (0.1N) solutions. Evaporate the solvent from the dried organic solution to give a liquid. Distill the liquid to give 4-(n-decyl)benzaldehyde (19 g. 77% yield, b.p. 152°-156° C. at 0.3 mm).

Provenance & Evidence