Methane → HCID 67347233, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 4-bromo-1-naphthalenecarboxylic acid (100 g), benzylacrylate (96.8 g), triphenylphosphine (10.2 g) palladium(II) acetate (2 g), triethylamine (258 ml) and DMF (600 ml) are heated at 90-100° C. for 4-12 h (typically 10-12 h). Two further portions of palladium(II) acetate (20 g) are added at four hour intervals during the stir period. The mixture is treated with charcoal (3×15 g) at 50-80° C. (typically 70-80° C.) filtering after each charge at 40-45° C. The DMF is then distilled off at 80-90° C. under vacuum and the residue is cooled to 25-35° C. Dichloromethane (100 ml) and water (100 ml) are added to the residue and the mixture is acidified with concentrated hydrochloric acid and is stirred at 20-35° C. for about 30 min. The mixture is filtered, and the solid product dried. The residue is dissolved in a mixture of DMF (600 ml) then water (400 ml) at 90-100° C. and stirred for 1-1.5 h. The solution is filtered at 80-85° C., cooled to 20-35° C., and stirred for about 2 h. The product is filtered off and dried (dry weight 43 g).

Provenance & Evidence