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Recycling studies for the hydrogenation of 1a under H2/CO2 using Ru@PGS. Reaction conditions for reversibility: Ru@PGS (0.026 mmol Ru), substrate (0.65 mmol, 25 eq.), n-butanol (0.65 mL), H2/CO2 (45 bar, 2 : 1), 80 C, 16 h. For the recycling study, the reaction time is 5 h. Product yield determined by GC-FID using tetradecane as the internal standard. Data points are average values of two to four experiments and error bars represent standard deviations.

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