(1RS, 2SR,6RS,7SR)-4-(5-bromo-2-ethylphenyl)-10-oxatricyclo[5.2.1.02,6]-dec-8-en-3,5-dione → (1RS,2SR,6RS,7SR)-4-(5-bromo-2-ethylphenyl)-10-oxatricyclo-[5.2.1.02,6]decane-3,5-dione

Participants

Reaction Steps

A solution of (1RS, 2SR,6RS,7SR)-4-(5-bromo-2-ethylphenyl)-10-oxatricyclo[5.2.1.02,6]-dec-8-en-3,5-dione (3.00 g, 8.6 mmol) in methanol (250 ml) is hydrogenated at 3.5 bar over 5% palladium on carbon for 2 hours at room temperature. The catalyst is removed by filtration through diatomaceous earth and the solvent is evaporated under reduced pressure to give (1RS,2SR,6RS,7SR)-4-(5-bromo-2-ethylphenyl)-10-oxatricyclo-[5.2.1.02,6]decane-3,5-dione.

Provenance & Evidence