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Potassium Carbonate → {4-[(5-Chloro-3-methyl-pyridin-2-ylmethyl)-amino]-butyl}-cyclopropyl-carbamic acid tert-butyl ester

HRID 1592496
ノート
印刷プレビュー

反応式

HRID 1592496 の反応式
[C:1]([O:5][C:6](=[O:16])[N:7]([CH2:11][CH2:12][CH2:13][CH2:14][NH2:15])[CH:8]1[CH2:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2].[Cl:17][C:18]1[CH:19]=[C:20]([CH3:26])[C:21]([CH:24]=O)=[N:22][CH:23]=1.C([O-])([O-])=O.[K+].[K+].[BH4-].[Na+].C([O-])(O)=O.[Na+]>CO>[C:1]([O:5][C:6](=[O:16])[N:7]([CH2:11][CH2:12][CH2:13][CH2:14][NH:15][CH2:24][C:21]1[C:20]([CH3:26])=[CH:19][C:18]([Cl:17])=[CH:23][N:22]=1)[CH:8]1[CH2:9][CH2:10]1)([CH3:4])([CH3:2])[CH3:3]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

7

反応物 5

HCID 11430Potassium CarbonateHCID 516892Sodium BicarbonateHCID 4311764Sodium borohydrideHCID 67271617(4-Amino-butyl)-cyclopropylcarbamic acid tert-butyl esterHCID 722140555-Chloro-3-methylpicolinaldehyde

生成物 1

HCID 67272035{4-[(5-Chloro-3-methyl-pyridin-2-ylmethyl)-amino]-butyl}-cyclopropyl-carbamic acid tert-butyl ester
収率 44%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

反応条件

温度
0 °C

実験手順

A mixture of (4-amino-butyl)-cyclopropyl-carbamic acid tert-butyl ester (0.228 g, 1.00 mmol), 5-chloro-3-methyl-pyridine-2-carbaldehyde (0.141 g, 1.00 mmol) and K2CO3 (0.138 g, 1.00) in MeOH (5 mL) was stirred for 16 h. The mixture was filtered through a celite cake and the filtrate was cooled at 0° C. NaBH4 (0.038 g, 1.0 mmol) was added to the filtrate, and the mixture was stirred for 30 min. Saturated aqueous NaHCO3 (20 mL) was added and MeOH was removed. The aqueous residue was extracted with CH2Cl2 (3×30 mL). The organic extracts were combined and dried over anhydrous Na2SO4. After filtration the solvent was removed by evaporation under vacuum, and the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH), affording {4-[(5-chloro-3-methyl-pyridin-2-ylmethyl)-amino]-butyl}-cyclopropyl-carbamic acid tert-butyl ester as a pale yellow oil (0.155 g, 44%). 1H NMR (CDCl3) δ 0.54-0.59 (m, 2H), 0.69-0.75 (m, 2H), 1.45 (s, 9H), 1.54-1.61 (m, 4H), 2.30 (s, 3H), 2.45-2.50 (m, 1H), 2.69-2.74 (m, 2H), 3.18-3.23 (m, 2H), 3.85 (s, 2H), 7.43 (s, 1H), 8.34 (s, 1H).

後処理

  1. filtrationThe mixture was filtered through a celite cake
  2. stirringthe mixture was stirred for 30 min
  3. customMeOH was removed
  4. extractionThe aqueous residue was extracted with CH2Cl2 (3×30 mL)
  5. dry with materialdried over anhydrous Na2SO4
  6. filtrationAfter filtration the solvent
  7. customwas removed by evaporation under vacuum
  8. customthe residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH)

出典と根拠

ORDレコード
ord-a09cc1845bcb438abd2ee167e8bd10e7
出典データセット
uspto-grants-2007_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07291631B2

反応ノート

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