9-Methylanthracene → 9-Methyl-9,10-dihydroanthracene

Participants

Reaction Conditions

Reaction Steps

9,10-Dihydro-9-methylanthracene was prepared by pressurizing a mixture of 2 g of 9-methylanthracene, 0.5 g of a barium-promoted copper chromite catalyst (Girdler G-22), and 3 ml of ethyl alcohol with hydrogen to 3000 psi at room temperature, followed by heating the mixture at a temperature of 150° C. for 1 hour with agitation. The product was characterized by nmr spectroscopy. The products of four such runs were combined, and the mixture was vacuum-distilled to give 9,10-dihydro-9-methylanthracene as a pale-yellow solid.

Provenance & Evidence