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3,5-Bis(trifluoromethyl)benzylamine → (+/-)-t-Butyl-5-(3,5-bistrifluoromethylbenzylamino)-7-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate

HRID 2353963
ノート
印刷プレビュー

反応式

HRID 2353963 の反応式
[F:1][C:2]([F:16])([F:15])[C:3]1[CH:4]=[C:5]([CH:8]=[C:9]([C:11]([F:14])([F:13])[F:12])[CH:10]=1)[CH2:6][NH2:7].[C:17]([O:21][C:22]([N:24]1[CH2:30][CH2:29][CH2:28][C:27](=O)[C:26]2[CH:32]=[C:33]([C:36]([F:39])([F:38])[F:37])[CH:34]=[CH:35][C:25]1=2)=[O:23])([CH3:20])([CH3:19])[CH3:18].[BH4-].[Na+]>CO.O.C(OCC)(=O)C.CC(C)[O-].[Ti+4].CC(C)[O-].CC(C)[O-].CC(C)[O-]>[C:17]([O:21][C:22]([N:24]1[CH2:30][CH2:29][CH2:28][CH:27]([NH:7][CH2:6][C:5]2[CH:4]=[C:3]([C:2]([F:15])([F:16])[F:1])[CH:10]=[C:9]([C:11]([F:14])([F:12])[F:13])[CH:8]=2)[C:26]2[CH:32]=[C:33]([C:36]([F:39])([F:37])[F:38])[CH:34]=[CH:35][C:25]1=2)=[O:23])([CH3:20])([CH3:18])[CH3:19]
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 3

HCID 5210993,5-Bis(trifluoromethyl)benzylamineHCID 4311764Sodium borohydrideHCID 686786965-Oxo-7-trifluoromethyl-2,3,4,5-tetrahydro-benzo[b]azepine-1-carboxylic acid tert-butyl ester

生成物 1

HCID 86616081(+/-)-t-Butyl-5-(3,5-bistrifluoromethylbenzylamino)-7-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate

試薬・触媒・溶媒 4

HCID 11026
Titanium isopropoxide
触媒
HCID 887Methanol溶媒
HCID 962Water溶媒
HCID 8857Ethyl Acetate溶媒

実験手順

Add 3,5-bis(trifluoromethyl)benzylamine (0.1 g, 0.4 mmol) followed by titanium isopropoxide (1.0 mL) to 5-Oxo-7-trifluoromethyl-2,3,4,5-tetrahydro-benzo[b]azepine-1-carboxylic acid tert-butyl ester (0.13 g, 0.4 mmol) and stir at room temperature overnight. Dilute the mixture with 5 mL of Methanol and add sodium borohydride (0.8 mmol). Stir the suspension at room temperature for 30 min then dilute with water (20 mL) and ethyl acetate (20 mL). Filter the resulting emulsion through celite and wash with ethyl acetate (3×20 mL). Separate the organics, dry over sodium sulfate, and filter. Remove the solvent under vacuum to afford (+/−)-t-butyl-5-(3,5-bistrifluoromethylbenzylamino)-7-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate crude (0.2 g, MS (ES+): 557 (M+H)). Without further purification, add acetyl chloride (0.8 mmol) and pyridine (0.8 mmol) to a solution of (+/−)-t-butyl-5-(3,5-bistrifluoromethylbenzylamino)-7-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate in dichloromethane. After stirring for 2 h remove solvent under vacuum and chromatograph over silica gel using ethyl acetate/hexane (5-40%) to elute. This affords the title compound as an oil (0.2 g, 83%) which foams under vacuum: MS (ES−): 597 (M−H).

後処理

  1. stirringStir the suspension at room temperature for 30 min
  2. filtrationFilter the resulting emulsion through celite
  3. washwash with ethyl acetate (3×20 mL)
  4. customSeparate the organics,
  5. dry with materialdry over sodium sulfate
  6. filtrationfilter
  7. customRemove the solvent under vacuum

出典と根拠

ORDレコード
ord-5b74781093d54dd18638cf7f9e0ca76f
出典データセット
uspto-grants-2010_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07749992B2

反応ノート

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