9-Carboxyfluorene → HCID 178512314, compound

Participants

Reaction Steps

N-(4-Amino-benzyl)-N′-cyano-N″-quinolin-5-yl-guanidine (133 mg, 0.50 mmol) and 9H-fluorene-9-carboxylic acid (105 mg, 0.50 mmol) were suspended in N,N-dimethylformamide(1.0 mL). Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphate (232 mg, 0.52 mmol) was added followed by N,N-diisopropylethylamine (0.20 mL, 1.15 mmol). The reaction mixture was stirred at room temperature for 24 hours and then diluted with ethyl acetate (30 mL). This solution was washed with water (30 mL×2) and dried over anhydrous sodium sulfate. The solvent was removed in vacuo to give the desired product (102 mg, 44.5%). 1H NMR (DMSO-d6, ppm): 10.72 (s, 1H), 9.59 (bs, 1H), 8.37 (d, 2H), 8.27 (bs, 1H), 7.90 (d, 2H), 7.60 (t, 4H), 7.43 (t, 2H), 7.31 (m, 4H), 7.18 (m, 2H), 5.03 (s, 1H), 4.43 (d, 2H).

Provenance & Evidence