Benzyl 3-(4-(1-tert-butoxy-2-methyl-1-oxopropan-2-yloxy)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate → Tert-butyl 2-methyl-2-(4-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)phenoxy)propanoate

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Reaction Steps

To a solution of benzyl 3-(4-(1-tert-butoxy-2-methyl-1-oxopropan-2-yloxy)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate (0.69 g, 1.12 mmol) in 1:1 solution of ethyl acetate/methanol (20 mL), was added 10 wt % palladium on carbon (0.2 g). After stirring under hydrogen at room temperature and atmospheric pressure for 2 hours, the reaction mixture was filtered, washed with methanol, concentrated in vacuo to obtain tert-butyl 2-methyl-2-(4-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)phenoxy)propanoate (0.5 g, 93%).

Provenance & Evidence