Cesium carbonate → 3-fluoro-2-(1H-1,2,3-triazol-1-yl)benzoic acid

HRID 869022

반응식

HRID 869022 반응식
[F:1][C:2]1[C:3](I)=[C:4]([CH:8]=[CH:9][CH:10]=1)[C:5]([OH:7])=[O:6].C([O-])([O-])=O.[Cs+].[Cs+].[N:18]1[NH:19][N:20]=[CH:21][CH:22]=1.CN(C)[C@@H]1CCCC[C@H]1N>O1CCOCC1.O.[Cu]I>[F:1][C:2]1[C:3]([N:18]2[CH:22]=[CH:21][N:20]=[N:19]2)=[C:4]([CH:8]=[CH:9][CH:10]=1)[C:5]([OH:7])=[O:6]

참가 물질

8

반응물 4

HCID 10796Cesium carbonateHCID 675161H-1,2,3-TriazoleHCID 11275066(1R,2R)-N1,N1-Dimethylcyclohexane-1,2-diamineHCID 223203083-Fluoro-2-iodobenzoic acid

생성물 1

HCID 670871113-fluoro-2-(1H-1,2,3-triazol-1-yl)benzoic acid

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 962Water용매2회HCID 312751,4-Dioxane용매

반응 조건

온도
100 °C

실험 절차

To 3-fluoro-2-iodobenzoic acid (4.5 g, 16.9 mmol) dissolved in dioxane (33.8 mL) and H2O (0.09 mL) was added Cs2CO3 (11.02 g, 33.8 mmol), CuI (161 mg, 0.85 mmol), 2H-1,2,3-triazole (1.96 mL, 33.8 mmol), and trans-N,N-dimethyl-1,2-cyclohexanediamine (0.53 mL, 3.38 mmol). The mixture was then heated to 100° C. overnight, cooled to room temperature, diluted with H2O, and extracted with EtOAc. The aqueous layer was then acidified and extracted with EtOAc. The combined organics were dried and concentrated. From this concentrate a solid precipitated to provide intermediate A-33 (285 mg, 8%). MS (ESI) mass calcd for C9H6FN3O2, 207.0. m/z found 208.1 [M+H]+. 1H NMR (500 MHz, Methanol-d4) δ 6.81-6.77 (m, 1H), 6.46-6.40 (m, 2H), 6.30-6.23 (m, 1H), 6.18-6.12 (m, 1H).

후처리

  1. temperaturecooled to room temperature
  2. extractionextracted with EtOAc
  3. extractionextracted with EtOAc
  4. customThe combined organics were dried
  5. concentrationconcentrated
  6. concentrationFrom this concentrate a solid
  7. customprecipitated
  8. customto provide intermediate A-33 (285 mg, 8%)

출처 및 근거

ORD 기록
ord-9bef943801574c0c9548f24bf3b6d421
출처 데이터셋
uspto-grants-2015_03
특허 번호
US08969352B2

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