Lithium hydroxide, monohydrate → (2S)-2-Acetamido-3-(4-[9-phenanthrenyl]phenyl)propanoic acid

HRID 1664112

反応式

HRID 1664112 の反応式
[C:1]([NH:4][C@@H:5]([CH2:10][C:11]1[CH:16]=[CH:15][C:14]([C:17]2[C:18]3[C:23]([C:24]4[CH:25]=[CH:26][CH:27]=[CH:28][C:29]=4[CH:30]=2)=[CH:22][CH:21]=[CH:20][CH:19]=3)=[CH:13][CH:12]=1)[C:6]([O:8]C)=[O:7])(=[O:3])[CH3:2].O.[OH-].[Li+]>C1COCC1.O.O>[C:1]([NH:4][C@@H:5]([CH2:10][C:11]1[CH:16]=[CH:15][C:14]([C:17]2[C:18]3[C:23]([C:24]4[CH:25]=[CH:26][CH:27]=[CH:28][C:29]=4[CH:30]=2)=[CH:22][CH:21]=[CH:20][CH:19]=3)=[CH:13][CH:12]=1)[C:6]([OH:8])=[O:7])(=[O:3])[CH3:2]

参加物

5

反応物 2

HCID 168937Lithium hydroxide, monohydrateHCID 42597520Methyl (2S)-2-acetamido-3-(4-[9-phenanthrenyl]phenyl)propanoate

生成物 1

HCID 42597522(2S)-2-Acetamido-3-(4-[9-phenanthrenyl]phenyl)propanoic acid収率 55%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 21881883Oxolane--water (1/1)溶媒

実験手順

To a solution of 98 (124 mg, 0.31 mmol) in THF/water, 2:1 (9 mL) was added lithium hydroxide monohydrate (26 mg, 0.62 mmol) and the resulting suspension was allowed to stir for 16 h. The reaction mixture was diluted with water (30 mL) and the THF was removed by evaporation. The aqueous layer was washed with DCM (40 mL) to remove unreacted starting material. The aqueous phase was acidified with 10% HCl and the resulting precipitate was extracted with DCM (3×40 mL). The combined organics were dried and evaporated to yield the title compound (65 mg, 0.17 mmol, 55%) as a white solid. Mp 128-132° C. [α]D20 +36.8 (c. 0.1, EtOH). 1H NMR (CD3OD, 300 MHz): δ 8.71 (d, J=8.1 Hz, 1H, ArH4″); 8.66 (d, J=8.4 Hz, 1H, ArH3″); 7.79 (s, 1H, ArH1″); 7.76 (s, 1H, ArH10″); 7.51 (m, 5H, ArH7″, ArH6″, ArH5″, ArH2″ and ArH1″); 7.32 (m, 2H, Ar′H); 4.76 (dd, J=5.1, 9.0 Hz, 1H, H2); 3.29 (dd, J=4.8, 13.5 Hz, 1H, H3a); 3.03 (dd, J=8.7, 13.5 Hz, 1H, H3b); 1.95 (s, 3H, COCH3). Mass Spectrum (ES, +ve) m/z 384 (50%) [MH+]. HRMS calcd for C25H22NO3 384.1600, found 384.1628.

後処理

  1. customthe THF was removed by evaporation
  2. washThe aqueous layer was washed with DCM (40 mL)
  3. customto remove unreacted
  4. extractionthe resulting precipitate was extracted with DCM (3×40 mL)
  5. customThe combined organics were dried
  6. customevaporated

出典と根拠

ORDレコード
ord-81e143deb3b541d39b28898d0bf91b8b
出典データセット
uspto-grants-2011_10
特許番号
US08039430B2

関連ノート

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