Methane → HCID 13174427, compound

Participants

Reaction Steps

Step 2, Hydrogenation Process (Ethyl Ester): 99.1 g of crude alpha-hydroxy-(4-methyl-2-oxo-3-cyclopenten-1-yl)-acetic acid ethyl ester (as prepared in Example 1) in 882 ml of toluene was hydrogenated over 9.91 g of 10% by weight of palladium and 90% by weight of charcoal at room temperature and 25-50 psi. After hydrogen uptake had ceased, the catalyst and solvent were removed by filtration and evaporation to give 101 g of a viscous, amber-colored oil. This oil is distilled to provide the product alpha-hydroxy-4-methyl-2-oxo-cyclopentane acetic acid ethyl ester, bp 96°-111°/0.05 mmHg, for use in Example 5.

Provenance & Evidence