Carbon Dioxide → HCID 19978414, compound

Participants

Reaction Steps

A solution of 1-methoxymethylfluorene (4.5 g, 21.4 mmol) in 100 mL of THF at -78° C. was charged with butyl lithium (10.0 mL, 23.5 mmol). The reaction mixture was stirred for 15 min, then CO2 gaseous (5g, 113.6 mmol) was introduced via cannula over a period 15 min at -78° C. The reaction mixture was warmed up to room temperature and stirred for additional 2 hr until colorless, diluted with water (100 mL) and ethyl acetate (50 mL). The layers were separated, the water layer was washed with ethyl acetate (3×50 mL), then acidified with conc. HCl. The resulting precipitate was collected, washed with water and dried to give 1-methoxymethyl-9-fluorenecarboxylic acid (1.8 g, 33.1%).

Provenance & Evidence