4-Chloro-2-fluoro-3-methoxyphenylboronic acid → 6-Amino-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylic acid methyl ester

HRID 245280

反応式

HRID 245280 の反応式
[CH3:1][O:2][C:3]([C:5]1[CH:10]=[C:9]([NH2:11])[N:8]=[C:7](Cl)[N:6]=1)=[O:4].[Cl:13][C:14]1[CH:19]=[CH:18][C:17](B(O)O)=[C:16]([F:23])[C:15]=1[O:24][CH3:25]>COCCOC.O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:1][O:2][C:3]([C:5]1[CH:10]=[C:9]([NH2:11])[N:8]=[C:7]([C:17]2[CH:18]=[CH:19][C:14]([Cl:13])=[C:15]([O:24][CH3:25])[C:16]=2[F:23])[N:6]=1)=[O:4]

参加物

6

反応条件

温度
80 °C

実験手順

6-Amino-2-chloropyrimidine-4-carboxylic acid methyl ester (2.25 g, 12 mmol, 4-chloro-2-fluoro-3-methoxyphenylboronic acid (3.27 g, 16 mmol), and bis(triphenylphosphine)palladium(II) dichloride (842 mg, 1.2 mmol) were combined in 12 mL of 1,2-dimethoxyethane and 12 mL of water. The reaction mixture was heated at 80° C. for 2 h and the cooled reaction mixture was partitioned between ethyl acetate and water. The organic phase was washed with water, dried, and concentrated under vacuum. The product was purified by flash chromatography on silica gel to yield the title compound (2.0 g, 53.5% yield): mp 188-190° C.: 1H NMR (CDCl3) δ 7.66 (dd, 1H), 7.22 (dd, 1H), 7.14 (s, 1H), 5.25 (br s, 2H), 4.0 (s, 3H), 3.99 (s, 3H).

後処理

  1. customthe cooled reaction mixture
  2. customwas partitioned between ethyl acetate and water
  3. washThe organic phase was washed with water
  4. customdried
  5. concentrationconcentrated under vacuum
  6. customThe product was purified by flash chromatography on silica gel

出典と根拠

ORDレコード
ord-8cbee6570fb84ca3b9e972863db6d1d8
出典データセット
uspto-grants-2014_02
特許番号
US08658791B2

関連ノート

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