1-Tetracosanol → 1-Bromotetracosane

Participants

Reaction Steps

A series of n-alkyl bromides (CnH2n+1Br) were purchased from TCI (n=3, 6, 9, 12, 15, and 18) and Aldrich (n=22), and used as received. 1-Tetracosyl bromide (n-C24H49Br) was prepared from the corresponding alcohol (Aldrich) according to the following procedure. Triphenylphosphine (95 mg, 0.36 mmol) and carbontetrabromide (120 mg, 0.36 mmol) were sequentially introduced into a dichloromethane solution (50 ml) dissolved with 1-tetracosanol (60 mg, 0.17 mmol), and the mixture was stirred at room temperature for 12 hr. The solvent was then removed by evacuation, and the produced 1-tetracosyl bromide was isolated from the reaction mixture by column chromatography. 4-[4-(Dimethylamino)styryl]pyridin (Aldrich), tetraethylorthosilicate (TEOS, Acros), sodium aluminate (NaAlO2, Kanto) and tetrapropylammonium hydroxide (TPAOH, Aldrich) were purchased, and used as received. n-Octadecane and n-heptadecane were purchased from PolyScience Corporation and used as such. 4-Nitroaniline was purchased from Aldrich, and used as such.

Provenance & Evidence