Ethyl 3-(2-propanyl)bicyclo[2.2.1]hept-5-ene-2-carboxylate → HCID 20035410, compound

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Reaction Steps

0.35 g of 5% palladium on charcoal as catalyst was added to 6.5 g of ethyl 3-isopropyl-5-bicycloheptene-2-carboxylate (mixture of isomers obtained according to Example 5) dissolved in 30 ml of ethanol, after which the mixture was hydrogenated at 20° C. for 1 hour under a hydrogen pressure of 100 kPa. The catalyst was then filtered off, the filtrate evaporated down and the evaporation residue distilled. 5.7 g were obtained of the desired compound as a mixture of endo- and exo-isomer. b.p.: 89° C./0.7 kPa; NMR (of the mixture): 0.7-1.0 (6H); 1.2 (3H, t); 1.0-2.5 (11H); 3.9-4.2 (2H).

Provenance & Evidence