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Hydrochloric Acid → 6-(3-Ethoxyphenyl)nicotinic acid

HRID 388382
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인쇄 미리보기

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HRID 388382 반응식
Br[C:2]1[N:7]=[CH:6][C:5]([C:8]([OH:10])=[O:9])=[CH:4][CH:3]=1.[CH2:11]([O:13][C:14]1[CH:15]=[C:16](B(O)O)[CH:17]=[CH:18][CH:19]=1)[CH3:12].C(=O)([O-])[O-].[Na+].[Na+].Cl>COCCOC.O.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.Cl[Pd]Cl.C(OCC)(=O)C>[CH2:11]([O:13][C:14]1[CH:19]=[C:18]([C:2]2[N:7]=[CH:6][C:5]([C:8]([OH:10])=[O:9])=[CH:4][CH:3]=2)[CH:17]=[CH:16][CH:15]=1)[CH3:12]
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참가 물질

9

반응물 4

HCID 313Hydrochloric AcidHCID 10340Sodium CarbonateHCID 2389326-Bromonicotinic acidHCID 27739203-Ethoxybenzeneboronic acid

생성물 1

HCID 532232596-(3-Ethoxyphenyl)nicotinic acid수율 24.1%

시약·촉매·용매 4

HCID 6102075
Dichlorobis(triphenylphosphine)palladium
촉매
HCID 962Water용매2회
HCID 80711,2-Dimethoxyethane용매
HCID 8857Ethyl Acetate용매

반응 조건

온도
140 °C

실험 절차

To a solution of 6-bromo-3-pyridinecarboxylic acid (Sigma-Aldrich; 100 mg, 0.495 mmol) in 1,2-dimethoxyethane (9 ml) was added [3-(ethyloxy)phenyl]boronic acid (Sigma-Aldrich; 247 mg, 1.485 mmol), sodium carbonate (315 mg, 2.97 mmol) pre-dissolved in water (1 ml) and bis(triphenylphosphine)palladium(II)chloride (52.1 mg, 0.074 mmol). The mixture was heated at 140° C. for 30 mins in a microwave reactor (high absorbance). Ethyl acetate and water were added followed by aqueous HCl (5M). The aqueous layer was extracted with more ethyl acetate. The organic layers were evaporated to dryness and purified using a 5 g SAX column which was pre conditioned with MeOH. The column was washed with MeOH (2 column volumes) and then eluted with 0.5M NH3/MeOH. The eluant was evaporated to dryness under reduced pressure to give a yellow solid. Purification by MDAP gave the title compound as a white solid (29 mg);

후처리

  1. extractionThe aqueous layer was extracted with more ethyl acetate
  2. customThe organic layers were evaporated to dryness
  3. custompurified
  4. washThe column was washed with MeOH (2 column volumes)
  5. washeluted with 0.5M NH3/MeOH
  6. customThe eluant was evaporated to dryness under reduced pressure
  7. customto give a yellow solid
  8. customPurification by MDAP

출처 및 근거

ORD 기록
ord-0fa15fd94730425abcd669c6040a1d54
출처 데이터셋
uspto-grants-2013_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08377941B2

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