Benzylethanolamine → 2-[Benzyl({5-[benzyl(1-methylethyl)amino]-3-chloropyrazin-2-yl}methyl)amino]ethanol

HRID 1877853ノート

反応式

HRID 1877853 の反応式
C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].[CH2:15]([N:22]([CH:32]([CH3:34])[CH3:33])[C:23]1[N:24]=[C:25]([Cl:31])[C:26]([CH:29]=O)=[N:27][CH:28]=1)[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1.[CH2:35]([NH:42][CH2:43][CH2:44][OH:45])[C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1.C(=O)([O-])O.[Na+]>C(#N)C.C(O)(=O)C>[CH2:35]([N:42]([CH2:29][C:26]1[C:25]([Cl:31])=[N:24][C:23]([N:22]([CH2:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[CH:32]([CH3:34])[CH3:33])=[CH:28][N:27]=1)[CH2:43][CH2:44][OH:45])[C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1

参加物

7

反応物 4

HCID 4348BenzylethanolamineHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 866489995-[Benzyl(1-methylethyl)amino]-3-chloropyrazine-2-carbaldehyde

生成物 1

HCID 866490002-[Benzyl({5-[benzyl(1-methylethyl)amino]-3-chloropyrazin-2-yl}methyl)amino]ethanol収率 94%

試薬・触媒・溶媒 2

HCID 176Acetic Acid溶媒HCID 6342Acetonitrile溶媒

実験手順

Sodium triacetoxyborohydride (2.65 g) was added to a solution of 5-[benzyl(1-methylethyl)amino]-3-chloropyrazine-2-carbaldehyde (2.42 g), N-benzylethanolamine (1.42 g) and acetic acid (1.43 mL) in acetonitrile (14 mL), and the mixture was stirred at room temperature for 16 hr. The reaction mixture was basified with saturated aqueous sodium hydrogen carbonate solution, and extracted with ethyl acetate. The aqueous layer was extracted again with ethyl acetate. The combined organic layer was washed with water and saturated brine, dried over magnesium sulfate, and concentrated. The residue was purified by silica gel column chromatography (solvent gradient: 20→50% ethyl acetate/hexane) to give the title compound (3.32 g, 94%) as a pale-yellow oil.

後処理

  1. extractionextracted with ethyl acetate
  2. extractionThe aqueous layer was extracted again with ethyl acetate
  3. washThe combined organic layer was washed with water and saturated brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated
  6. customThe residue was purified by silica gel column chromatography (solvent gradient: 20→50% ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-56f832ef1d994a138cbeedf005564ba1
出典データセット
uspto-grants-2012_11
特許番号
US08314088B2

反応ノート

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