In a glove box, catalyst Rh/I (16.5 mg), N-methylpyrrolidone (1.0 mL), di-n-butylamine (168 L, 1 mmol), and decane (10 L,0.05 mmol) were added to the reaction kettle. Then CO2 was charged to replace the nitrogen in the kettle for three times, and then CO2 (20 atm) and H2 (20 atm) were charged, and the reaction was stirred in an oil bath at 100 for 24 h. After the reaction was completed, the kettle was cooled down to room temperature with an ice-water bath, and then the gas phase was measured after centrifugation of the supernatant, and the yield was 68%.
