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Methanol → 3-{[5-(azetidin-1-ylcarbonyl)-3-chloropyridin-2-yl]oxy}-5-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}benzoic acid

HRID 1011772
ノート
印刷プレビュー

反応式

HRID 1011772 の反応式
[N:1]1([C:5]([C:7]2[CH:8]=[C:9]([Cl:30])[C:10]([O:13][C:14]3[CH:15]=[C:16]([CH:21]=[C:22]([O:24][C@@H:25]([CH3:29])[CH2:26][O:27][CH3:28])[CH:23]=3)[C:17]([O:19]C)=[O:18])=[N:11][CH:12]=2)=[O:6])[CH2:4][CH2:3][CH2:2]1.CO.[OH-].[Li+].O>C1COCC1>[N:1]1([C:5]([C:7]2[CH:8]=[C:9]([Cl:30])[C:10]([O:13][C:14]3[CH:15]=[C:16]([CH:21]=[C:22]([O:24][C@@H:25]([CH3:29])[CH2:26][O:27][CH3:28])[CH:23]=3)[C:17]([OH:19])=[O:18])=[N:11][CH:12]=2)=[O:6])[CH2:4][CH2:3][CH2:2]1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 887MethanolHCID 962WaterHCID 3939Lithium HydroxideHCID 53629669methyl 3-{[5-(azetidin-1-ylcarbonyl)-3-chloropyridin-2-yl]oxy}-5-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}benzoate

生成物 1

HCID 536296673-{[5-(azetidin-1-ylcarbonyl)-3-chloropyridin-2-yl]oxy}-5-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}benzoic acid収率 89.1%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

A mixture of methyl 3-hydroxy-5-[(1S)-2-methoxy-(1-methylethyl)oxy]benzoate (240 mg, 0.1 mmol), 5-(azetidin-1-ylcarbonyl)-2,3-dichloropyridine (278 mg, 1.2 mmol) and potassium carbonate (276 mg, 2.0 mmol) in DMA (5 mL) was stirred at 120° C. for 16 hours. The solution was poured into water (30 mL) and acidified with 1N hydrochloric acid before being extracted with ethyl acetate (3×20 mL). The combined organics were washed with brine (20 mL), dried (MgSO4), filtered and the solvent removed in vacuo to give methyl 3-{[5-(azetidin-1-ylcarbonyl)-3-chloropyridin-2-yl]oxy}-5-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}benzoate (as evidenced by LCMS data only m/z 435 (M+H)+) as a brownish oil (550 mg). The crude methyl 3-{[5-(azetidin-1-ylcarbonyl)-3-chloropyridin-2-yl]oxy}-5-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}benzoate (434 mg, 1 mmol) was dissolved in THF (15 mL) and methanol (5 mL) then 1N aqueous Lithium hydroxide solution (2 mL) added followed by the dropwise addition of water until a clear solution obtained. The mixture was stirred was stirred for 4 hours at RT and the organics removed by evaporation. The aqueous solution was filtered, extracted with ethyl acetate (10 mL) and the aqueous layer acidified with 2N hydrochloric acid. The acidified layer was extracted with ethyl acetate (3×30 mL) and the combined organic extracts washed with water (10 mL), brine (10 mL) and concentrated in vacuo to give the desired compound as a pale oil (375 mg). 1H NMR δ (CDCl3): 1.27 (d, 3H), 2.32 (quin, 2H), 3.34 (s, 3H), 3.42-3.55 (m, 2H), 4.13-4.34 (m, 4H), 4.54 (q, 1H), 6.93 (s, 1H), 7.40 (s, 1H), 7.48 (s, 1H), 8.08 (s, 1H), 8.19 (s, 1H), m/z 421 (M+H)+

後処理

  1. customobtained
  2. stirringwas stirred for 4 hours at RT
  3. customthe organics removed by evaporation
  4. filtrationThe aqueous solution was filtered
  5. extractionextracted with ethyl acetate (10 mL)
  6. extractionThe acidified layer was extracted with ethyl acetate (3×30 mL)
  7. washthe combined organic extracts washed with water (10 mL), brine (10 mL)
  8. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-09413473f5d74b8e91331ad43b06bca6
出典データセット
uspto-grants-2011_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07977328B2

反応ノート

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