Trifluoroacetic acid → 1-(4-Chloro-5-(1-ethyl-7-(methylamino)-2-oxo-1,2-dihydro-1,6-naphthyridin-3-yl)-2-fluorophenyl)-3-(2,5-difluorophenyl)urea

反応式

[Cl:1][C:2]1[C:7]([C:8]2[C:9](=[O:31])[N:10]([CH2:29][CH3:30])[C:11]3[C:16]([CH:17]=2)=[CH:15][N:14]=[C:13]([N:18](CC2C=CC(OC)=CC=2)[CH3:19])[CH:12]=3)=[CH:6][C:5]([NH:32][C:33]([NH:35][C:36]2[CH:41]=[C:40]([F:42])[CH:39]=[CH:38][C:37]=2[F:43])=[O:34])=[C:4]([F:44])[CH:3]=1.C1(OC)C=CC=CC=1.C(O)(C(F)(F)F)=O>>[Cl:1][C:2]1[C:7]([C:8]2[C:9](=[O:31])[N:10]([CH2:29][CH3:30])[C:11]3[C:16]([CH:17]=2)=[CH:15][N:14]=[C:13]([NH:18][CH3:19])[CH:12]=3)=[CH:6][C:5]([NH:32][C:33]([NH:35][C:36]2[CH:41]=[C:40]([F:42])[CH:39]=[CH:38][C:37]=2[F:43])=[O:34])=[C:4]([F:44])[CH:3]=1

参加物

反応物 3

HCID 6422Trifluoroacetic acid

HCID 7519Anisole

HCID 867136661-(4-Chloro-5-(1-ethyl-7-((4-methoxybenzyl)(methyl)amino)-2-oxo-1,2-dihydro-1,6-naphthyridin-3-yl)-2-fluorophenyl)-3-(2,5-difluorophenyl)urea

生成物 1

HCID 715851351-(4-Chloro-5-(1-ethyl-7-(methylamino)-2-oxo-1,2-dihydro-1,6-naphthyridin-3-yl)-2-fluorophenyl)-3-(2,5-difluorophenyl)urea収率 92%

実験手順

A mixture of 1-(4-chloro-5-(1-ethyl-7-((4-methoxybenzyl)(methyl)amino)-2-oxo-1,2-dihydro-1,6-naphthyridin-3-yl)-2-fluorophenyl)-3-(2,5-difluorophenyl)urea (314 mg, 0.505 mmol) and anisole (273 mg, 2.52 mmol) was treated with TFA (3.0 mL, 51.9 mmol) and stirred at RT for 2.5 h. The mixture was concentrated to near-dryness, treated with EtOAc and satd. NaHCO3 and the resulting solid collected via filtration and dried to afford 1-(4-chloro-5-(1-ethyl-7-(methylamino)-2-oxo-1,2-dihydro-1,6-naphthyridin-3-yl)-2-fluorophenyl)-3-(2,5-difluorophenyl)urea (233 mg, 92% yield). 1H NMR (400 MHz, DMSO-d6): δ 9.24 (m, 2H), 8.40 (s, 1H), 8.17 (d, J=8.7 Hz, 1H), 7.97 (m, 1H), 7.73 (s, 1H), 7.54 (d, J=11.0 Hz, 1H), 7.27 (m, 1H), 7.02 (m, 1H), 6.80 (m, 1H), 6.23 (s, 1H), 4.12 (q, J=7.1 Hz, 2H), 2.85 (d, J=4.9 Hz, 3H), 1.19 (t, J=7.0 Hz, 3H); MS (ESI) m/z: 502.2 [M+H]+.