Acetamide → (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)oxazol-2-yl)phenyl)propanoate

HRID 1775812ノート

反応式

HRID 1775812 の反応式
B(F)(F)F.CCOCC.C([NH2:13])(=O)C.[C:14]([C:18]1[CH:58]=[CH:57][C:21]([C:22]([NH:24][C@H:25]([C:53]([O:55][CH3:56])=[O:54])[CH2:26][C:27]2[CH:52]=[CH:51][C:30]([C:31]([O:33][CH2:34][C:35]([C:37]3[CH:42]=[CH:41][C:40]([O:43][CH2:44][CH2:45][CH2:46][CH2:47][CH2:48][CH2:49][CH3:50])=[CH:39][CH:38]=3)=O)=O)=[CH:29][CH:28]=2)=[O:23])=[CH:20][CH:19]=1)([CH3:17])([CH3:16])[CH3:15]>CC(=O)OCC>[C:14]([C:18]1[CH:58]=[CH:57][C:21]([C:22]([NH:24][C@@H:25]([CH2:26][C:27]2[CH:52]=[CH:51][C:30]([C:31]3[O:33][CH:34]=[C:35]([C:37]4[CH:42]=[CH:41][C:40]([O:43][CH2:44][CH2:45][CH2:46][CH2:47][CH2:48][CH2:49][CH3:50])=[CH:39][CH:38]=4)[N:13]=3)=[CH:29][CH:28]=2)[C:53]([O:55][CH3:56])=[O:54])=[O:23])=[CH:20][CH:19]=1)([CH3:17])([CH3:16])[CH3:15]

参加物

5

反応物 3

HCID 178AcetamideHCID 8000Boron trifluoride etherateHCID 86689660(S)-2-(4-(heptyloxy)phenyl)-2-oxoethyl 4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoate

生成物 1

HCID 86689661(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)oxazol-2-yl)phenyl)propanoate収率 35.4%

試薬・触媒・溶媒 1

HCID 8857Ethyl Acetate溶媒

反応条件

温度
140 °C

実験手順

To boron trifluoride diethyl etherate (33.3 μl, 0.27 mmol) was added a mixture of acetamide (763 mg, 12.9 mmol) and (S)-2-(4-(heptyloxy)phenyl)-2-oxoethyl 4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoate (159 mg, 0.26 mmol). The reaction mixture was stirred at 140° C. for 1 h. The reaction mixture was allowed to cool to room temperature, diluted with EA (15 mL) and extracted with NaHCO3 (3×15 mL) and brine (15 mL). The combined organics were dried over MgSO4, filtered and concentrated. The residue was recrystallized from Et2O (5 mL), filtered and rinsed with Et2O. The filtrate was concentrated to afford 55 mg (16%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)oxazol-2-yl)phenyl)propanoate as an orange oil. LCMS-ESI (m/z) calculated for C37H44N2O5: 596.8. found 597.0 [M+H]+, tR=3.11 min. (Method 4).

後処理

  1. temperatureto cool to room temperature
  2. extractionextracted with NaHCO3 (3×15 mL) and brine (15 mL)
  3. dry with materialThe combined organics were dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was recrystallized from Et2O (5 mL)
  7. filtrationfiltered
  8. washrinsed with Et2O
  9. concentrationThe filtrate was concentrated

出典と根拠

ORDレコード
ord-ee5fb67f9af94e0fa7831b96362ffea6
出典データセット
uspto-grants-2016_02
特許番号
US09260427B2

反応ノート

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