Acetic Acid → (1-Benzyl-6-bromo-1,2,3,4-tetrahydroquinolin-3-yl)-carbamic acid tert-butyl ester

HRID 2234252ノート

反応式

HRID 2234252 の反応式
[C:1]([O:5][C:6](=[O:19])[NH:7][CH:8]1[CH2:17][C:16]2[C:11](=[CH:12][CH:13]=[C:14]([Br:18])[CH:15]=2)[NH:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2].[CH:20](=O)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].CC(O)=O>ClCCCl>[C:1]([O:5][C:6](=[O:19])[NH:7][CH:8]1[CH2:17][C:16]2[C:11](=[CH:12][CH:13]=[C:14]([Br:18])[CH:15]=2)[N:10]([CH2:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[CH2:9]1)([CH3:4])([CH3:2])[CH3:3]

参加物

6

反応物 4

HCID 176Acetic AcidHCID 240BenzaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 17758659tert-Butyl (6-bromo-1,2,3,4-tetrahydroquinolin-3-yl)carbamate

生成物 1

HCID 59297053(1-Benzyl-6-bromo-1,2,3,4-tetrahydroquinolin-3-yl)-carbamic acid tert-butyl ester収率 81.5%

試薬・触媒・溶媒 1

HCID 111,2-Dichloroethane溶媒

実験手順

To a solution of (6-bromo-1,2,3,4-tetrahydroquinolin-3-yl)-carbamic acid tert-butyl ester (1.636 g, 5 mmol), prepared as described in Example 1B, in DCE (16 mL) at RT was added benzaldehyde (1 mL, 10 mmol), followed by NaBH(OAc)3 (2.97 g, 14 mmol) and AcOH (0.6 mL, 10 mmol). The reaction mixture was stirred at RT for 16 h, then quenched with aqueous NaHCO3 (40 mL) and extracted with CH2Cl2 (50 mL×3). The combined extracts were washed with saturated aqueous NaCl, dried (Na2SO4), and concentrated. The resulting residue was chromatographed (silica gel) eluting with 0-20% of EtOAc in hexanes to give the title compound (1.70 g, 81%) as a white foam.

後処理

  1. customquenched with aqueous NaHCO3 (40 mL)
  2. extractionextracted with CH2Cl2 (50 mL×3)
  3. washThe combined extracts were washed with saturated aqueous NaCl
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated
  6. customThe resulting residue was chromatographed (silica gel)
  7. washeluting with 0-20% of EtOAc in hexanes

出典と根拠

ORDレコード
ord-2e3b1f869535469a912f28e42773e186
出典データセット
uspto-grants-2010_05
特許番号
US07709647B2

反応ノート

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