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

HRID 388382
ノート
印刷プレビュー

反応式

HRID 388382 の反応式
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]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

9

反応物 4

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

生成物 1

HCID 532232596-(3-Ethoxyphenyl)nicotinic acid収率 24.1%

試薬・触媒・溶媒 4

HCID 6102075
Dichlorobis(triphenylphosphine)palladium
触媒
HCID 962Water溶媒2 回
HCID 80711,2-Dimethoxyethane溶媒
HCID 8857Ethyl Acetate溶媒

反応条件

温度
140 °C

実験手順

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);

後処理

  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

出典と根拠

ORDレコード
ord-0fa15fd94730425abcd669c6040a1d54
出典データセット
uspto-grants-2013_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08377941B2

反応ノート

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