Imidazole → 4-Phenylcyclohexylmethyl iodide

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Reaction Steps

Imidazole (4.4 g, 0.065 mol) is added in one portion to a solution of triphenylphosphine (17.0 g, 0.065 mol) in dichloromethane (300 mL) at 25° C. After all of the solids dissolved, iodine (16.5 g, 0.065 mol) is added in four portions. The mixture is stirred for 10 min. then a solution of 4-phenylcyclohexylmethanol (10.5 g, 0.055 mol) is added dropwise and the mixture is stirred at 25° C. for 18 h. The reaction mixture is poured into pentane and the resulting solids filtered. The filtrate is concentrated in vacuo and the residue is dissolved in dichloromethane. This solution is poured into hexanes, the solids were filtered, and the filtrate is concentrated in vacuo. The residue is passed through a pad of silica gel using hexanes as eluent to afford 14.6 g (89%) of 4-phenylcyclohexylmethyl iodide as an oil.

Provenance & Evidence