Hydrochloric Acid → HCID 12741938, compound

Participants

Reaction Steps

A solution of 4,5-dimethyl-6-oxo-7-bromo-7-propyl-7,8-dihydro-6H-indeno[5,4-b]furan-2-carboxylic acid (1.2 g., 0.0033 mole) and 1,5-diazabicyclo [4.3.0]-5-nonene (0.8 ml.) in dimethylsulfoxide (8 ml.) is stirred at 25°C. for one hour then treated with water (30 ml.) hydrochloric acid (5 ml.) and ethanol (20 ml.) affording 4,5-dimethyl-6-oxo-7-propyl-6H-indeno[5,4-b]-furan-2-carboxylic acid as a red solid which melts at 242°C. after recrystallization from nitromethane.

Provenance & Evidence