Sodium Bicarbonate → (5R)-3-(3-Fluoro-4-(2-methylimidazol-1-yl)phenyl)-5-hydroxymethyloxazolidin-2-one

HRID 1582338

反応式

HRID 1582338 の反応式
C(O[C:9]([NH:11][C:12]1[CH:13]=[CH:14][C:15]([N:19]2[CH:23]=[CH:22][N:21]=[C:20]2[CH3:24])=[C:16]([F:18])[CH:17]=1)=O)C1C=CC=CC=1.C([Li])CCC.[CH2:30]([O:34][C:35](=[O:39])CCC)[C@@H:31]1[O:33]C1.C(=O)(O)[O-].[Na+]>O1CCCC1.CN1CCCN(C)C1=O>[F:18][C:16]1[CH:17]=[C:12]([N:11]2[CH2:9][C@H:30]([CH2:31][OH:33])[O:34][C:35]2=[O:39])[CH:13]=[CH:14][C:15]=1[N:19]1[CH:23]=[CH:22][N:21]=[C:20]1[CH3:24]

参加物

7

反応物 4

HCID 516892Sodium BicarbonateHCID 2724536(2R)-Oxiran-2-ylmethyl butanoateHCID 218766515-Benzyloxycarbonylamino-2-(2-methyl-imidazol-1-yl)fluorobenzeneHCID 178418339Butyllithium

生成物 1

HCID 21356557(5R)-3-(3-Fluoro-4-(2-methylimidazol-1-yl)phenyl)-5-hydroxymethyloxazolidin-2-one収率 44.5%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒2 回HCID 816462(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl-溶媒

実験手順

5-Benzyloxycarbonylamino-2-(2-methylimidazol-1-yl)fluorobenzene (54 g, 0.166 M) was dissolved in a mixture of dry tetrahydrofuran (600 ml) and 1,3-dimethyl-2,4,5,6-tetrahydro-2(1H)-pyrimidinone (100 ml) under nitrogen, cooled to −70°, and treated with a solution of n-butyllithium (1.6 M in isohexane, 114 ml), over 30 minutes. After stirring for 30 minutes at −70°, a solution of (R)-glycidylbutyrate (26.35 g, 0.183 M) in dry tetrahydrofuran (50 ml) was added over 15 minutes. Stirring was continued for 16 hours allowing the temperature to rise to ambient. The mixture was treated with aqueous sodium bicarbonate.(5%, 500 ml) and ethyl acetate (800 ml), the organic layer separated, and the aqueous extracted with further ethyl acetate (3×750 ml). The combined extracts were dried (magnesium sulfate) and evaporated, and the resulting oil triturated with diethyl ether. The resulting solid was recrystallised from isopropanol to give the title compound (21.5 g). NMR (DMSO-d6) δ: 2.16 (s, 3H); 3.56 (dt, 1H); 3.69 (dt, 1H); 3.88 (dd, 1H); 4.15 (t, 1H); 4.74 (m, 1H); 5.24 (t, 1H); 6.92 (s, 1H); 7.20 (s, 1H); 7.48 (dd, 1H); 7.53 (t, 1H); 7.74 (dd, 1H). MS (ESP): 292 (MH+) for C14H14FN3O3

後処理

  1. temperaturecooled to −70°
  2. stirringStirring
  3. waitwas continued for 16 hours
  4. custom(5%, 500 ml) and ethyl acetate (800 ml), the organic layer separated
  5. extractionthe aqueous extracted with further ethyl acetate (3×750 ml)
  6. dry with materialThe combined extracts were dried (magnesium sulfate)
  7. customevaporated
  8. customthe resulting oil triturated with diethyl ether
  9. customThe resulting solid was recrystallised from isopropanol

出典と根拠

ORDレコード
ord-553697fbdc05478d99487fe445cf4552
出典データセット
uspto-grants-2004_05
特許番号
US06734200B1

関連ノート

読み込み中…