2,4,6-Trimethylaniline → 5-bromo-2-chloro-N-(2,4,6-trimethylphenyl)-4-pyrimidinamine

HRID 1294431ノート

反応式

HRID 1294431 の反応式
[CH3:1][C:2]1[CH:7]=[C:6]([CH3:8])[CH:5]=[C:4]([CH3:9])[C:3]=1[NH2:10].[Br:11][C:12]1[C:13]([Cl:19])=[N:14][C:15]([Cl:18])=[N:16][CH:17]=1.CC(N(C(C)C)CC)C>O1CCOCC1>[Br:11][C:12]1[C:13]([Cl:19])=[N:14][C:15]([NH:10][C:3]2[C:4]([CH3:9])=[CH:5][C:6]([CH3:8])=[CH:7][C:2]=2[CH3:1])=[N:16][CH:17]=1.[Br:11][C:12]1[C:13]([NH:10][C:3]2[C:4]([CH3:9])=[CH:5][C:6]([CH3:8])=[CH:7][C:2]=2[CH3:1])=[N:14][C:15]([Cl:18])=[N:16][CH:17]=1

参加物

6

反応物 3

HCID 69132,4,6-TrimethylanilineHCID 81531DiisopropylethylamineHCID 2899735-Bromo-2,4-dichloropyrimidine

生成物 2

HCID 221700865-bromo-2-chloro-N-(2,4,6-trimethylphenyl)-4-pyrimidinamine収率 65%HCID 221701025-bromo4-chloro-N-(2,4,6-trimethylphenyl)-2-pyrimidinamine収率 24%

試薬・触媒・溶媒 1

HCID 312751,4-Dioxane溶媒2 回

実験手順

Reaction under argon atmosphere. A solution of 2,4,6-trimethylbenzenamine (0.00461 mol) in 1,4-dioxane (5 ml) was added to a solution of 5-bromo-2,4-dichloropyrimidine (0.00439 mol) in 1,4-dioxane (5 ml). N,N-bis(1-methylethyl)ethanamine (0.00548 mol) was added. The reaction mixture was stirred and refluxed for 20 hours. The solvent was evaporated. The residue was dissolved in ethyl acetate, washed with a saturated aqueous sodium bicarbonate solution, water and brine, dried with sodium sulfate, filtered, and the solvent was evaporated. The residue was purified by column chromatography over silica gel (eluent: 1:5, 1:2 and 1:1 CH2Cl2: hexane). Two pure fraction groups were collected and their solvent was evaporated, yielding 0.35 g (24%) of 5-bromo-4-chloro-N-(2,4,6-trimethylphenyl)-2-pyrimidinamine (intern. 1) and 0.93 g (65%) of 5-bromo-2-chloro-N-(2,4,6-trimethylphenyl)-4-pyrimidinamine (interm. 2).

後処理

  1. customReaction under argon atmosphere
  2. temperaturerefluxed for 20 hours
  3. customThe solvent was evaporated
  4. dissolutionThe residue was dissolved in ethyl acetate
  5. washwashed with a saturated aqueous sodium bicarbonate solution, water and brine
  6. dry with materialdried with sodium sulfate
  7. filtrationfiltered
  8. customthe solvent was evaporated
  9. customThe residue was purified by column chromatography over silica gel (eluent: 1:5, 1:2 and 1:1 CH2Cl2: hexane)
  10. customTwo pure fraction groups were collected
  11. customtheir solvent was evaporated

出典と根拠

ORDレコード
ord-507fc978a6c14121915e6a556752bda5
出典データセット
uspto-grants-2007_07
特許番号
US07241458B1

反応ノート

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