Naphthalene → 1-(1-Methylethyl)naphthalene

Participants

Reaction Steps

10 g of a perfluorodecanesulfonic acid C10F21SO3H was deposited via vacuum distillation on 75 g of porous chromosorb. 5 g of this catalyst was charged into a liquid-phase alkylation reactor together with 0.1 mol of naphthalene dissolved in 150 ml of decaline. Through the stirred solution, close to its boiling point (190° C.) propylene was passed through at a rate of 0.8 l/min. for one hour. Thereafter, the solution was stirred at the same temperature for one additional hour. After cooling, the catalyst was filtered off and the solution distilled in vacuum. The yield of isopropylnaphthalene obtained was 68% with an isomer composition of 92% β- and 8% α-isomer (analyzed by gas-liquid chromatorgraphy).

Provenance & Evidence