Sodium Hydroxide → 4-(3-Hydroxymethyl-[1,2,4]triazol-1-yl)-piperidine-1-carboxylic acid tert-butyl ester

HRID 1928587ノート

反応式

HRID 1928587 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]2[CH:18]=[N:17][C:16]([C:19](OCC)=[O:20])=[N:15]2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H-].[Al+3].[Li+].[H-].[H-].[H-].[OH-].[Na+].[O-]S([O-])(=O)=O.[Mg+2]>C1COCC1.O>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][CH:11]([N:14]2[CH:18]=[N:17][C:16]([CH2:19][OH:20])=[N:15]2)[CH2:12][CH2:13]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

7

反応物 4

HCID 14798Sodium HydroxideHCID 24083Sulfuric acid magnesium salt (1:1)HCID 21226445Aluminium lithium hydrideHCID 687480884-(3-Ethoxycarbonyl-[1,2,4]triazol-1-yl)-piperidine-1-carboxylic acid tert-butyl ester

生成物 1

HCID 577083924-(3-Hydroxymethyl-[1,2,4]triazol-1-yl)-piperidine-1-carboxylic acid tert-butyl ester

試薬・触媒・溶媒 2

HCID 962Water溶媒2 回HCID 8028Tetrahydrofuran溶媒2 回

実験手順

To a solution of 4-(3-ethoxycarbonyl-[1,2,4]triazol-1-yl)-piperidine-1-carboxylic acid tert-butyl ester (from Step 1, 0.64 g, 2.06 mmol) in THF (10 mL) at 0° C. was added lithium aluminum hydride (0.078 g, 2.06 mmol). The solution was allowed to warm to room temperature and stirred for 4 hours. The solution was diluted with THF, cooled to 0° C., and 1 mL of water was added followed by 1 mL of 15% NaOH and 3 mL of water. The solution was allowed to warm to room temperature and stirred for 15 minutes. MgSO4 was then added and the solution was stirred an additional 15 minutes, filtered and concentrated in vacuo. The residue was purified by flash chromatograph on silica gel with MeOH and CH2Cl2 to afford the desired product. 1H NMR (CDCl3): δ 8.03 (1H, s), 4.79 (2H, d), 4.25 (3H, m), 2.95 (2H, m), 2.58 (1H, t), 2.19 (2H, m), 1.98 (2H, m), 1.43 (9H, s).

後処理

  1. temperaturecooled to 0° C.
  2. temperatureto warm to room temperature
  3. stirringstirred for 15 minutes
  4. stirringthe solution was stirred an additional 15 minutes
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash chromatograph on silica gel with MeOH and CH2Cl2

出典と根拠

ORDレコード
ord-9179375ddadc428e9638887b0d834e22
出典データセット
uspto-grants-2012_05
特許番号
US08183381B2

反応ノート

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