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Toluene → Isopropyl 4-{5-[2-fluoro-4-(methylsulfonyl)phenyl]benzo[d]oxazol-2-yl}piperidine-1-carboxylate

HRID 710120
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HRID 710120 반응식
FC(F)(F)C(O)=O.[F:8][C:9]1[CH:14]=[C:13]([S:15]([CH3:18])(=[O:17])=[O:16])[CH:12]=[CH:11][C:10]=1[C:19]1[CH:20]=[CH:21][C:22]2[O:26][C:25]([CH:27]3[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]3)=[N:24][C:23]=2[CH:33]=1.Cl[C:35]([O:37][CH:38]([CH3:40])[CH3:39])=[O:36].C1(C)C=CC=CC=1>C(Cl)Cl.O>[F:8][C:9]1[CH:14]=[C:13]([S:15]([CH3:18])(=[O:16])=[O:17])[CH:12]=[CH:11][C:10]=1[C:19]1[CH:20]=[CH:21][C:22]2[O:26][C:25]([CH:27]3[CH2:32][CH2:31][N:30]([C:35]([O:37][CH:38]([CH3:40])[CH3:39])=[O:36])[CH2:29][CH2:28]3)=[N:24][C:23]=2[CH:33]=1
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참가 물질

6

반응물 3

HCID 1140TolueneHCID 7917Isopropyl chloroformateHCID 710895675-(2-Fluoro-4-(methylsulfonyl)phenyl)-2-(piperidin-4-yl)-benzo[d]oxazole 2,2,2-trifluoroacetate

생성물 1

HCID 71114585Isopropyl 4-{5-[2-fluoro-4-(methylsulfonyl)phenyl]benzo[d]oxazol-2-yl}piperidine-1-carboxylate

시약·촉매·용매 2

HCID 962Water용매
HCID 6344
Dichloromethane
용매

실험 절차

Tert-butyl 4-{5-[2-fluoro-4-(methylsulfonyl)phenyl]benzo[d]oxazol-2-yl}piperidine-1-carboxylate (200 mg, 0.42 mmol) dissolved in DCM and added Trifluoroacetic acid (0.75 ml). This mixture was stirred at rt for 2 h. DCM removed from the reaction mixture to obtain 5-(2-fluoro-4-(methylsulfonyl)phenyl)-2-(piperidin-4-yl)benzo[d]oxazole 2,2,2-trifluoroacetate (190 mg). 5-(2-fluoro-4-(methylsulfonyl)phenyl)-2-(piperidin-4-yl)-benzo[d]oxazole 2,2,2-trifluoroacetate (190 mg, 0.39 mmol) was dissolved in DCM (20 ml) and added TEA (0.43 ml, 3.12 mmol). This mixture stirred at rt for 30 mins and added isopropyl chloroformate in toluene (0.095 g, 0.78 mmol). After 1 h, reaction mass diluted with water and extracted with DCM. Removal of DCM afforded crude. Crude was purified by combiflash using a mixture of EtOAc and Petether (35:65) as eluent to afford the titled compound (120 mg) as a pale-yellow solid. M.P.: 96.5-101.2° C. 1H-NMR (δ ppm, CDCl3, 400 MHz): 7.87 (s, 1H), 7.81 (dd, J 1.7, 8, 1H), 7.80-7.75 (m, 1H), 7.67 (t, J 7.5, 1H), 7.59 (d, J 8.4, 1H), 7.50 (d, J 8.5, 1H), 4.94 (septet, J 6.2, 1H), 4.19 (d, J 10.9, 2H), 3.22-3.13 (m, 1H), 3.12 (s, 3H), 3.04 (t, J 10.9, 2H), 2.22-2.14 (m, 2H), 2.00-1.88 (m, 2H), 1.26 (d, J 6.2, 6H).

후처리

  1. waitAfter 1 h
  2. customreaction mass
  3. extractionextracted with DCM
  4. customRemoval of DCM
  5. customafforded crude
  6. customCrude was purified by combiflash
  7. additiona mixture of EtOAc and Petether (35:65) as eluent

출처 및 근거

ORD 기록
ord-796888eebeb84f64ab41732ea74beedd
출처 데이터셋
uspto-grants-2015_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09181214B2

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