2-(Methylamino)ethanol → 2-(tert-butyldiphenylsilyloxy)-N-methylethanamine

HRID 572789

反応式

HRID 572789 の反応式
[CH3:1][NH:2][CH2:3][CH2:4][OH:5].C(N(CC)CC)C.[C:13]([Si:17](Cl)([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)([CH3:16])([CH3:15])[CH3:14]>C(Cl)Cl.CN(C)C1C=CN=CC=1>[Si:17]([O:5][CH2:4][CH2:3][NH:2][CH3:1])([C:13]([CH3:16])([CH3:15])[CH3:14])([C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

参加物

6

反応物 3

HCID 80162-(Methylamino)ethanolHCID 8471TriethylamineHCID 94078tert-Butyldiphenylchlorosilane

生成物 1

HCID 118231582-(tert-butyldiphenylsilyloxy)-N-methylethanamine収率 53%

試薬・触媒・溶媒 2

HCID 142844-(Dimethylamino)pyridine触媒HCID 6344Dichloromethane溶媒

反応条件

温度
40 °C

実験手順

To a solution of 2-(methylamino)ethanol (2.14 mL, 26.6 mmol) in DCM (60 mL) was added triethylamine (4.1 mL, 29.3 mmol),N,N-dimethylpyridin-4-amine (1.63 g, 13.3 mmol) and tert-butylchlorodiphenylsilane (7.6 mL, 29.3 mmol). The reaction was stirred overnight at 40° C. After cooling to RT, the reaction was quenched with water (20 mL) and ether (100 mL). The organic phase was washed with water, brine, dried over magnesium sulfate and concentrated to afford the crude product which was purified by flash chromatography on silica gel eluting with 0 to 10% MeOH in DCM. The solvent was evaporated to dryness to afford 2-(tert-butyldiphenylsilyloxy)-N-methylethanamine (4.4 g, 53%) as a colorless oil. NMR Spectrum (DMSOd6): 0.99 (s, 9H), 2.27 (s, 3H), 2.63 (t, 2H), 3.68 (t, 2H), 7.40-7.49 (m, 6H), 7.60-7.65 (m, 4H).

後処理

  1. temperatureAfter cooling to RT
  2. customthe reaction was quenched with water (20 mL) and ether (100 mL)
  3. washThe organic phase was washed with water, brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated
  6. customto afford the crude product which
  7. customwas purified by flash chromatography on silica gel eluting with 0 to 10% MeOH in DCM
  8. customThe solvent was evaporated to dryness

出典と根拠

ORDレコード
ord-fda01a43cee343629498adfbe2f2e243
出典データセット
uspto-grants-2015_05
特許番号
US09029374B2

関連ノート

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