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Triethylamine → Rac-2-(4-{4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid ethyl ester

HRID 557752
ノート
印刷プレビュー

反応式

HRID 557752 の反応式
Cl.[N:2]1([C:8]2[CH:13]=[CH:12][C:11]([NH:14][C:15]([C:17]3[N:18]=[C:19]([C:26]4[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=4)[O:20][C:21]=3[C:22]([F:25])([F:24])[F:23])=[O:16])=[CH:10][CH:9]=2)[CH2:7][CH2:6][NH:5][CH2:4][CH2:3]1.[CH2:32]([O:34][C:35]([C@@H:37]1[CH2:41][CH2:40][CH2:39][C@H:38]1[C:42](O)=[O:43])=[O:36])[CH3:33].C(N(CC)CC)C.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1>CN1CCCC1=O.C(OCC)(=O)C>[CH2:32]([O:34][C:35]([CH:37]1[CH2:41][CH2:40][CH2:39][CH:38]1[C:42]([N:5]1[CH2:6][CH2:7][N:2]([C:8]2[CH:13]=[CH:12][C:11]([NH:14][C:15]([C:17]3[N:18]=[C:19]([C:26]4[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=4)[O:20][C:21]=3[C:22]([F:23])([F:25])[F:24])=[O:16])=[CH:10][CH:9]=2)[CH2:3][CH2:4]1)=[O:43])=[O:36])[CH3:33]
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 8471TriethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 57652016Rac-trans-cyclopentane-1,2-dicarboxylic acid monoethyl esterHCID 667383362-Phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid (4-piperazin-1-yl-phenyl)-amide hydrochloride

生成物 1

HCID 66738241
Rac-2-(4-{4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid ethyl ester
収率 93%

試薬・触媒・溶媒 2

HCID 8857Ethyl Acetate溶媒HCID 13387N-methyl-2-pyrrolidone溶媒

実験手順

To a solution of 2-phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid (4-piperazin-1-yl-phenyl)-amide hydrochloride (212 mg, 0.435 mmol), racemic trans-cyclopentane-1,2-dicarboxylic acid monoethyl ester (81 mg, 0.435 mmol) and triethylamine (305 μL, 2.17 mmol) in 5 mL 1-methyl-2-pyrrolidinone was added (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate (BOP, 202 mg, 0.456 mmol) in one portion and the mixture was stirred at room temperature overnight. The reaction mixture was diluted with ethyl acetate, washed with water, saturated aqueous sodium bicarbonate, dried over magnesium sulfate, filtered, and evaporated under reduced pressure. The residue was purified by flash chromatography (eluted with ethyl acetate/hexane) to yield rac-2-(4-{4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid ethyl ester as an amorphous solid (236 mg, 93%). ES-MS calcd for C30H31F3N4O5 (m/e) 584.60, obsd 585 (M+H).

後処理

  1. washwashed with water, saturated aqueous sodium bicarbonate
  2. dry with materialdried over magnesium sulfate
  3. filtrationfiltered
  4. customevaporated under reduced pressure
  5. customThe residue was purified by flash chromatography (eluted with ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-7dec01da16954af48c33d620010811a5
出典データセット
uspto-grants-2011_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08058299B2

反応ノート

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