反应 #3739354
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08741915B2
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: A mixture of 1-(3-chlorophenyl)-2-phenylethanone (450 mg, 1.95 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (411 mg, 1.95 mmol), and urea (350 mg, 5.83 mmol) in anhydrous EtOH (15 mL) was added concentrated HCl solution (0.5 mL), the reaction mixture was refluxed overnight. TLC (EtOAc:MeOH=10:1) showed that about 30% of starting materials were consumed, and the reaction mixture was concentrated. The residue was purified by column chromatography (EtOAc:MeOH=40:1) and preparative HPLC to afford Compound 37 as a yellow solid (78.1 mg, yield: 8.6%). 1H NMR (DMSO-d6 400 MHz): δ 10.30 (s, 1H), 8.81 (s, 1H), 7.56 (s, 1H), 7.42 (d, J=1.2 Hz, 1H), 7.30 (d, J=8.0 Hz, 1H), 7.20-7.25 (m, 2H), 7.02-7.7.13 (m, 5H), 6.85 (d, J=6.8 Hz, 2H), 5.25 (d, J=2.8 Hz, 1H), 4.00-4.10 (m, 2H), 1.33 (t, J=6.8 Hz, 3H); MS (ESI): m/z 466.0 [M+1]+. the reaction mixture was refluxed overnight were consumed the reaction mixture was concentrated The residue was purified by column chromatography (EtOAc:MeOH=40:1) and preparative HPLC
来源 ID: ord-c4a6e95544194e8eba06a333c7e31cdb