反应详情

To a solution containing ethyl 2-(4-chloro-3-fluorophenylamino)-2-oxoacetate (1) (1.73 g, 7.05 mmol) in 20 mL dioxane in a round-bottom flask was added (1R,2S)-1-amino-2,3-dihydro-1H-inden-2-ol (1.16 g, 7.76 mmol) and both a stir bar and a reflux condenser were equipped. The reaction was heated to reflux for 72 hours and then allowed to cool to room temperature. The crude reaction mixture was concentrated in vacuo. The solid was collected by filtration with a 1:1 mixture of hexanes and dichloromethane to give 2.04 g (83%) of TK-II-103 as an off-white flakey solid; [α]29D=−112.1° (c=0.48, DMSO): 1H NMR (500 MHz, DMSO-d6) δ 11.19 (s, 1H), 8.36 (d, J=8.7 Hz, 1H), 7.97, (dd, J=2, 11.7 Hz, 1H), 7.77, (d, J=8.8 Hz, 1H), 7.59, (t, J=8.7 Hz, 1H), 7.28-7.18, (m, 4H), 5.46, (d, J=4.9 Hz, 1H), 5.25, (dd, J=5.2, 8.6 Hz, 1H), 4.52, (dd, J=4.6, 8.6 Hz, 1H), 3.14, (dd, J=4.9, 16.2 Hz, 1H), 2.88, (d, J=16.1 Hz, 1H); 13C NMR (125 MHz, DMSO-d6) δ 159.3, 158.8, 156.8, (d, JCF=242.5 Hz), 141.0, 140.8, 138.2, (d, JCF=10 Hz), 131.6, 127.7, 126.5, 125.0, 124.1, 117.5 (d, JCF=2.9 Hz), 114.5 (d, JCF=17.5 Hz), 108.6, (d, JCF=25 Hz), 71.6, 56.9. HRMS (ES+) m/z 371.0572 [(M+Na)+; calcd for C17H14ClFN2O3: 371.0575].

1. customboth a stir bar and a reflux condenser were equipped
2. temperatureThe reaction was heated
3. temperatureto reflux for 72 hours
4. customThe crude reaction mixture
5. concentrationwas concentrated in vacuo
6. filtrationThe solid was collected by filtration with a 1:1 mixture of hexanes and dichloromethane