Succinic anhydride → HCID 178525507, compound

Participants

Reaction Conditions

Reaction Steps

Aniline derivative 16 (0.89 g, 5.0 mmol) was dissolved in pyridine (25 mL). Succinic anhydride (0.75 g, 7.5 mmol) was added together with 4-N,N,-dimethylaminopyridine (63 mg, 0.5 mmol) and the mixture was stirred overnight at 100° C. The solution was concentrated under reduced pressure and the pale brown solid was recrystallized from a mixture of EtOH/MeOH/H2O (60 mL, 5/35/1, v/v/v). After filtration, the mother liquid was concentrated to ˜10 mL to give carboxylic acid 17 as a solid which was dried under vacuum at 50° C. for 16 h. Yield 1.28 g (92%). Rf 0.3 (DCM/MeOH/AcOH, 100/10/1, v/v/v).

Provenance & Evidence