Diisopropylethylamine → (R)-3-(2-chloro-4-nitroimidazol-1-yl)-2-hydroxy-2-methylpropyl 4-(4-trifluoromethoxyphenyl)piperazine-1-carboxylate

HRID 856196ノート

反応式

HRID 856196 の反応式
[F:1][C:2]([F:20])([F:19])[O:3][C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH2:15][CH2:14][N:13]([C:16](Cl)=[O:17])[CH2:12][CH2:11]2)=[CH:6][CH:5]=1.C(N(CC)C(C)C)(C)C.[Cl:30][C:31]1[N:32]([CH2:39][C@:40]([OH:44])([CH3:43])[CH2:41][OH:42])[CH:33]=[C:34]([N+:36]([O-:38])=[O:37])[N:35]=1>CN(C)C1C=CN=CC=1.C1(C)C=CC=CC=1.C(OCC)(=O)C>[F:1][C:2]([F:20])([F:19])[O:3][C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH2:15][CH2:14][N:13]([C:16]([O:42][CH2:41][C@@:40]([OH:44])([CH3:43])[CH2:39][N:32]3[CH:33]=[C:34]([N+:36]([O-:38])=[O:37])[N:35]=[C:31]3[Cl:30])=[O:17])[CH2:12][CH2:11]2)=[CH:6][CH:5]=1

参加物

7

反応物 3

HCID 81531DiisopropylethylamineHCID 16099121(R)-3-(2-Chloro-4-nitro-1H-imidazol-1-yl)-2-methylpropane-1,2-diolHCID 230812344-(4-Trifluoromethoxyphenyl)piperazine-1-carbonylchloride

生成物 1

HCID 69479536(R)-3-(2-chloro-4-nitroimidazol-1-yl)-2-hydroxy-2-methylpropyl 4-(4-trifluoromethoxyphenyl)piperazine-1-carboxylate収率 92%

試薬・触媒・溶媒 3

HCID 142844-(Dimethylamino)pyridine触媒HCID 1140Toluene溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
100 °C

実験手順

4-(4-Trifluoromethoxyphenyl)piperazine-1-carbonylchloride (1.25 g, 4.2 mmol), N,N-diisopropylethylamine (0.96 ml, 5.6 mmol) and 4-dimethylaminopyridine (67 mg, 0.56 mmol) were added to a suspension of (R)-2-chloro-1-(2,3-dihydroxy-2-methylpropyl)-4-nitroimidazole prepared in Example 10 (0.65 g, 2.8 mmol) in toluene (13 ml) followed by stirring at 100° C. for 8.5 hours. The reaction mixture was diluted with ethyl acetate, washed with water, dried over magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (methylene chloride/ethyl acetate=19/1) to afford (R)-3-(2-chloro-4-nitroimidazol-1-yl)-2-hydroxy-2-methylpropyl 4-(4-trifluoromethoxyphenyl)piperazine-1-carboxylate (1.29 g, yield 92%) as a yellow oil.

後処理

  1. washwashed with water
  2. dry with materialdried over magnesium sulfate
  3. concentrationconcentrated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (methylene chloride/ethyl acetate=19/1)

出典と根拠

ORDレコード
ord-8f8bd5caffc24f00b44061dadf4a3aad
出典データセット
uspto-grants-2007_08
特許番号
US07262212B2

反応ノート

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