2-(4-Bromo-2,6-dimethylphenyl)-4-[1-(tetrahydropyran-4-yl)-methylidene]-cyclopentane-1,3-dione → 2-(4-Bromo-2,6-dimethylphenyl)-4-(tetrahydropyran-4-ylmethyl)cyclopentane-1,3-dione

Participants

Reaction Steps

A solution of 2-(4-bromo-2,6-dimethylphenyl)-4-[1-(tetrahydropyran-4-yl)methylidene]cyclopentane-1,3-dione (0.10 g, 0.26 mmol) in methanol (100 ml) is passed over a cartridge of 10% platinum carbon under a 20 bar hydrogen atmosphere. The reaction mixture is then concentrated in vacuo, and the crude product is purified by flash column chromatography (hexane/ethyl acetate as eluant) to afford rac-2-(4-bromo-2,6-dimethylphenyl)-4-(tetrahydropyran-4-ylmethyl)cyclopentane-1,3-dione.

Provenance & Evidence