Water → 2-(2',3'-Difluoro-4'-octyloxyphenyl)-5-bromopyrimidine

HRID 1603292ノート

反応式

HRID 1603292 の反応式
[Br:1][C:2]1[CH:3]=[N:4][C:5](I)=[N:6][CH:7]=1.C(=O)([O-])[O-].[Na+].[Na+].[F:15][C:16]1[C:21]([F:22])=[C:20]([O:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH3:31])[CH:19]=[CH:18][C:17]=1B(O)O.O>COCCOC.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>[F:15][C:16]1[C:21]([F:22])=[C:20]([O:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH3:31])[CH:19]=[CH:18][C:17]=1[C:5]1[N:4]=[CH:3][C:2]([Br:1])=[CH:7][N:6]=1

参加物

7

反応物 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 70066515-Bromo-2-iodopyrimidineHCID 10850744(2,3-Difluoro-4-(octyloxy)phenyl)boronic acid

生成物 1

HCID 232970432-(2',3'-Difluoro-4'-octyloxyphenyl)-5-bromopyrimidine収率 55.5%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒HCID 80711,2-Dimethoxyethane溶媒2 回

実験手順

--To a degassed mixture of 5-bromo-2-iodopyrimidine 2 (4.0 g, 14.0 mmol), tetrakis(triphenylphosphine)palladium (323 mg, 0.28 mmol), DME (30 ml), and aqueous 2M sodium carbonate (50 ml) was added 2,3-difluoro-4-octyloxyphenylboronic acid 3 (4.42 g, 15.4 mmol) dropwise in DME (10 ml) under an atmosphere of nitrogen. The mixture was heated under reflux overnight; water was added to the mixture and the organic layer was separated. The aqueous layer was extracted with ethyl acetate (twice) and the combined organic solutions were washed with brine and dried (MgSO4). The solvent was removed in vacuo and the residue was purified by flash chromatography (5% to 10% ethyl acetate-light petroleum; the crude material was preloaded onto silica in dichloromethane) to give the phenylpyrimidine 4 (3.1 g, 55%) (from methanol), m.p. 74.6° C.; νmax /cm-1 (KBr) 2920, 2850, 1625, 1475, 1420, 1310 and 1090; δ 0.91(1H, t, Me), 1.2-1.55(10H, m), 1.85 (2H, quint. OCH2CH2), 4.11 (2H, t, OCH2), 6.82 (1H, ddd, 5'-H), 7.83 (1H, ddd, 6'-H) and 8.86 (2H, s, 4- and 6-H); m/z 288 (M+ -C8H16), 286 (M+ -C8H16), 178 and 155.

後処理

  1. temperatureThe mixture was heated
  2. temperatureunder reflux overnight
  3. customthe organic layer was separated
  4. extractionThe aqueous layer was extracted with ethyl acetate (twice) and the combined organic solutions
  5. washwere washed with brine
  6. dry with materialdried (MgSO4)
  7. customThe solvent was removed in vacuo
  8. customthe residue was purified by flash chromatography (5% to 10% ethyl acetate-light petroleum

出典と根拠

ORDレコード
ord-56e1a5a79a4b4d31bb1dddf0f7857242
出典データセット
uspto-grants-1999_11
特許番号
US05986096

反応ノート

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