1,2-Dichloro-4-isopropenylbenzene → 3,4-Dichlorocumene

Participants

Reaction Steps

3,4-dichloro-α-methylstyrene (21.9 g, 118 mmole), approximately 100 mg platinum oxide, and 125 ml absolute ethanol were shaken on a Paar Hydrogenator for four hours, at an initial hydrogen pressure of 50 psi. The material was then filtered through celite, and the solvent removed by distillation at atmospheric pressure. The resulting residual material was distilled at reduced pressure to produce 19.9 g (95% yield) of 3,4-dichlorocumene, bp 123°-126° C.

Provenance & Evidence