Diethylamine → HCID 57852692, compound

Participants

Reaction Steps

To 6,11-dihydro-5-thia-11-aza-benzo[α]fluorene-6-carboxylic acid (1.65 g, 6 mmol) in CH2Cl2 (15 ml) were added diethylamine (0.7 ml, 7 mmol), bromotripyrrolidinophosphonium hexafluorophosphate (2.75 g, 6 mmol) and diisopropylethylamine (3.1 ml, 18 mmol). The reaction was stirred at room temperature for 3 days. The reaction mixture was diluted with CH2Cl2 (100 ml), washed with 1N HCl, saturated NaHCO3 soln, brine, dried (MgSO4) and evaporated. The residue was purified by silica gel chromatography eluting with 50% EtOAc/petroleum ether to give 1.07 g (54%) of 6,11-dihydro-5-thia-11-aza-benzo[α]fluorene-6-carboxylic acid diethylamide as a yellow solid. 1H NMR (CDCl3) δ 9.23 (1H, s), 7.33 (1H, dd), 7.20 (1H, dd), 7.69-7.08 (5H, m), 6.66-6.72 (1H, m), 5.33 (1H, s), 3.34-3.76 (4H, m), 1.39 (3H, t), 1.37 (3H, t).

Provenance & Evidence