Sodium Carbonate → 3-(3,5-Dichlorophenyl)pyridine

HRID 1670465

반응식

HRID 1670465 반응식
Br[C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[C:4]([Cl:9])[CH:3]=1.[N:10]1[CH:15]=[CH:14][CH:13]=[C:12](B2OC(C)(C)C(C)(C)O2)[CH:11]=1.C([O-])([O-])=O.[Na+].[Na+]>C1(C)C=CC=CC=1.O.C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:9][C:4]1[CH:3]=[C:2]([C:12]2[CH:11]=[N:10][CH:15]=[CH:14][CH:13]=2)[CH:7]=[C:6]([Cl:8])[CH:5]=1

참가 물질

8

반응물 3

HCID 10340Sodium CarbonateHCID 29766Benzene, 1-bromo-3,5-dichloro-HCID 27346563-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine

생성물 1

HCID 576994213-(3,5-Dichlorophenyl)pyridine수율 114.2%

시약·촉매·용매 4

HCID 178418397HCID 178418397, 화합물촉매HCID 962Water용매HCID 1140Toluene용매HCID 8857Ethyl Acetate용매

반응 조건

온도
80 °C

실험 절차

Synthesized according to General Procedure 36. A mixture of 1-bromo-3,5-dichloro-benzene (424 mg, 1.88 mmol), 3-pyridineboronic acid pinacol ester (500 mg, 2.44 mmol), aqueous 2M Na2CO3 (1.96 mL, 3.93 mmol) and Pd(PPh3)4 (89 mg, 4 mol %) in anhydrous toluene (18 mL) was stirred overnight at 80° C. under nitrogen. The reaction was cooled down to room temperature, diluted with water (5 ml) and ethyl acetate (10 ml). The organic phase was separated, dried (Na2SO4), filtered and concentrated under reduced pressure to give a pale yellow oil, which was purified by silica-gel column chromatography to give 3-(3,5-dichlorophenyl)pyridine (481 mg, 74%) as a white solid. 1H-NMR (400 MHz, CDCl3) δ 8.81 (d, J=2.1 Hz, 1H), 8.65 (dd, J=1.4, 4.8 Hz, 1H), 7.85-7.82 (m, 1H), 7.46 (d, J=1.8 Hz, 2H), 7.41-7.38 (m, 2H). LC/MS (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)), m/z: M+1 obs=224.3; tR=1.21 min.

후처리

  1. customSynthesized
  2. temperatureThe reaction was cooled down to room temperature
  3. customThe organic phase was separated
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customto give a pale yellow oil, which
  8. customwas purified by silica-gel column chromatography

출처 및 근거

ORD 기록
ord-a2c415552ea54940a8c385187750ed78
출처 데이터셋
uspto-grants-2011_08
특허 번호
US07994166B2

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