1,4-Dioxane → benzyl 4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzylcarbamate

HRID 573813

반응식

HRID 573813 반응식
Br[C:2]1[N:6]=[CH:5][N:4]([C:7]2[CH:12]=[CH:11][C:10]([O:13][C:14]([F:17])([F:16])[F:15])=[CH:9][CH:8]=2)[N:3]=1.CC1(C)C(C)(C)OB([C:26]2[CH:43]=[CH:42][C:29]([CH2:30][NH:31][C:32](=[O:41])[O:33][CH2:34][C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)=[CH:28][CH:27]=2)O1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].O1CCOCC1>[Cl-].[Na+].O.O>[F:15][C:14]([F:17])([F:16])[O:13][C:10]1[CH:11]=[CH:12][C:7]([N:4]2[CH:5]=[N:6][C:2]([C:26]3[CH:43]=[CH:42][C:29]([CH2:30][NH:31][C:32](=[O:41])[O:33][CH2:34][C:35]4[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=4)=[CH:28][CH:27]=3)=[N:3]2)=[CH:8][CH:9]=1

참가 물질

7

반응물 4

HCID 312751,4-DioxaneHCID 62657Potassium Phosphate, TribasicHCID 712094283-bromo-1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazoleHCID 90404705benzyl N-{[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl}carbamate

생성물 1

HCID 90404490benzyl 4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzylcarbamate수율 56%

시약·촉매·용매 2

HCID 962Water용매HCID 57417360Sodium chloride; water용매

반응 조건

온도
65 °C

실험 절차

In a 50 mL round bottomed flask, equipped with a magnetic stir bar, 3-bromo-1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazole (C1) (1.0 g, 3.3 mmol), benzyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzylcarbamate (C13) (1.3 g, 3.6 mmol), bistriphenylphosphine dichloropalladium(II) (0.120 g, 0.171 mmol), and potassium phosphate (1.38 g, 6.49 mmol) were charged as solids. The flask was sealed and placed under nitrogen atmosphere. Dioxane (17.3 mL) and water (4.3 mL) were added. The reaction was warmed to an internal temperature of 65° C. for 18 hours. The reaction mixture was cooled to room temperature, poured into a brine solution and extracted with ethyl acetate (3×75 mL). The combined organic layers were dried over anhydrous magnesium sulfate, filtered, and concentrated. The resulting residue was purified via flash column chromatography using 0-50% ethyl acetate/hexanes as eluent to afford the title compound as a white solid (0.850 g, 56%): 1H NMR (400 MHz, DMSO-d6) δ 9.40 (s, 1H), 8.17-8.00 (m, 4H), 7.91 (t, J=6.2 Hz, 1H), 7.72-7.59 (m, 2H), 7.46-7.12 (m, 7H), 5.07 (s, 2H), 4.29 (d, J=6.1 Hz, 2H); 19F NMR (376 MHz, DMSO-d6) δ −56.96; ESIMS m/z 469 ([M+H]+).

후처리

  1. customIn a 50 mL round bottomed flask, equipped with a magnetic stir bar
  2. customThe flask was sealed
  3. temperatureThe reaction mixture was cooled to room temperature
  4. extractionextracted with ethyl acetate (3×75 mL)
  5. dry with materialThe combined organic layers were dried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe resulting residue was purified via flash column chromatography

출처 및 근거

ORD 기록
ord-9a80c9c109104691ad3c50a83dfa8f7a
출처 데이터셋
uspto-grants-2015_05
특허 번호
US09029560B2

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