5H-Inden-5-one, 7-butyl-1,2,3,6,7,7a-hexahydro- → 5H-Inden-5-one, 7-butyloctahydro-

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Reaction Steps

5-Butylbicyclo [4.3.0] non-1-en-3-one (120 g) is hydrogenated in ethyl acetate (125 ml) over 1.5 g of 5% palladium on carbon at a pressure of 4 atmospheres in a Parr apparatus. The solution is filtered through celite to remove the catalyst, concentrated, and the residue is vacuum distilled through a 12" Vigreaux column to yield 114 g (bp 98°-102° C. at 0.5 mm) of 5-butylbicyclo [4.3.0] nonan-3-one represented by the structure: ##STR10##

Provenance & Evidence