Hydrochloric Acid → (S)-2-(5-(2-(5-methyl-2-p-tolyloxazol-4-yl)ethoxy)-2,3-dihydro-1H-inden-1-yl)acetic acid

HRID 2216458ノート

反応式

HRID 2216458 の反応式
[CH3:1][C:2]1[O:6][C:5]([C:7]2[CH:12]=[CH:11][C:10]([CH3:13])=[CH:9][CH:8]=2)=[N:4][C:3]=1[CH2:14][CH2:15][O:16][C:17]1[CH:18]=[C:19]2[C:23](=[CH:24][CH:25]=1)[C@H:22]([CH2:26][C:27]([O:29]CC)=[O:28])[CH2:21][CH2:20]2.[Li+].[OH-].O.Cl>C1COCC1.CCO>[CH3:1][C:2]1[O:6][C:5]([C:7]2[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][CH:12]=2)=[N:4][C:3]=1[CH2:14][CH2:15][O:16][C:17]1[CH:18]=[C:19]2[C:23](=[CH:24][CH:25]=1)[C@H:22]([CH2:26][C:27]([OH:29])=[O:28])[CH2:21][CH2:20]2

参加物

7

反応物 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 3939Lithium HydroxideHCID 23529369ethyl 2-((1S)-5-{2-[5-methyl-2-(4-methylphenyl)(1,3-oxazol-4-yl)]ethoxy}indanyl)acetate

生成物 1

HCID 23529368(S)-2-(5-(2-(5-methyl-2-p-tolyloxazol-4-yl)ethoxy)-2,3-dihydro-1H-inden-1-yl)acetic acid収率 85%

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 8028Tetrahydrofuran溶媒

反応条件

温度
40 °C

実験手順

Ethyl 2-((1S)-5-{2-[5-methyl-2-(4-methylphenyl)(1,3-oxazol-4-yl)]ethoxy}indanyl)acetate (Example 136, 776.3 mg, 1.85 mmol) in THF (4.0 ml) was added to a mixture of aqueous LiOH (2 M, 3.7 ml, 7.4 mmol), water (2.0 ml), and EtOH (4.0 ml) at rt. The resulting mixture turned cloudy. This mixture was heated at 40° C. (oil-bath temperature). The reaction was completed after 1.5 hours. After cooling to rt, 1N HCl solution was slowly added to the mixture until pH 4.0. The compound was extracted with EtOAc (3×20 ml). The combined EtOAc layers were dried (Na2SO4) and evaporated. Flash chromatography of the residue gave 2-((1S)-5-{2-[5-methyl-2-(4-methylphenyl)(1,3-oxazol-4-yl)]ethoxy}indanyl)acetic acid (616.8 mg, 1.57 mmol, 85%) as a white solid. 1H NMR (CDCl3) δ 7.83(d, 2H), 7.21(d, 2H), 7.03(d, 1H), 6.74(d, 1H), 6.69(dd, 1H), 4.19(t, 2H), 3.45(q, 1H), 2.93(t, 2H), 2.78(m, 2H), 2.51(m, 2H), 2.30(s, 3H), 2.25(s, 3H), 1.53(m, 2H).

後処理

  1. temperatureAfter cooling to rt
  2. extractionThe compound was extracted with EtOAc (3×20 ml)
  3. dry with materialThe combined EtOAc layers were dried (Na2SO4)
  4. customevaporated

出典と根拠

ORDレコード
ord-97d1e2c9542140bc8ec15457bb4c52cc
出典データセット
uspto-grants-2006_09
特許番号
US07112597B2

反応ノート

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