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At 160° C. and 100 mm Hg, 14 g of alpha-naphthal and 9 g of dimethyl urethane were reacted in presence of 0.7 g of anhydrous AlCl3. The reaction was continued for 6 hours, removing the methanol formed during the reaction. A 28% conversion of naphthal was obtained, with practically complete selectivity to naphthyl-methyl-urethane.

1. customremoving the methanol
2. customformed during the reaction