Potassium Hydroxide → HCID 86674065, compound

Participants

Reaction Steps

3,9-Perylenedicarboxylic acid diisobutyl ester (500 mg, 1.1 mmol, 1 eq) was suspended in 200 mL EtOH, and 1 M aq. KOH (7 mL, 3.3 mmol, 3 eq) was added. The reaction mixture was refluxed for 16 h. The precipitate was filtered off and washed with EtOH as well as DCM to provide the title compound as a yellow powder (369 mg, 0.9 mmol, 80%). 1H NMR (400 MHz, MeOD, 333K) δ 6.87-6.82 (m, 2H, PDA aromatic H), 6.76 (dd, J=9.7, 7.5 Hz 4H, PDA aromatic H), 6.17 (d, J=7.7 Hz 4H, PDA aromatic H), 5.99 (ddd, J=8.6, 7.6, 1.2 Hz 4H, PDA aromatic H). HRMS (ESI): calcd. mass for C22H11O4−: ([M−H]−) 339.0663. found: 339.0653.

Provenance & Evidence