Water → 2-(1-tert-butoxycarbonyl-1H-thieno[3,2-c]pyrazol-3-yl)-5-hydroxymethyl-indole-1-carboxylic acid tert-butyl ester

HRID 2078688ノート

反応式

HRID 2078688 の反応式
[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([C:17](C)(C)[O:18][SiH2]C(C)(C)C)=[CH:14][CH:15]=2)[CH:10]=[C:9]1[C:26]1[C:27]2[S:40][CH:39]=[CH:38][C:28]=2[N:29]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[N:30]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[F-].C([N+](CCCC)(CCCC)CCCC)CCC.O>O1CCCC1>[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([CH2:17][OH:18])=[CH:14][CH:15]=2)[CH:10]=[C:9]1[C:26]1[C:27]2[S:40][CH:39]=[CH:38][C:28]=2[N:29]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[N:30]=1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

5

反応物 3

HCID 962WaterHCID 2724141Tetrabutylammonium FluorideHCID 131727412Tert-butyl 3-[5-(2-tert-butylsilyloxypropan-2-yl)-1-[(2-methylpropan-2-yl)oxycarbonyl]indol-2-yl]thieno[3,2-c]pyrazole-1-carboxylate2 回

生成物 1

HCID 576372852-(1-tert-butoxycarbonyl-1H-thieno[3,2-c]pyrazol-3-yl)-5-hydroxymethyl-indole-1-carboxylic acid tert-butyl ester収率 86%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
0 °C

実験手順

A solution of 2-(1-tert-butoxycarbonyl-1H-thieno[3,2-c]pyrazol-3-yl)-5-(tert-butyl-dimethyl-silanyloxymethyl)-indole-1-carboxylic acid tert-butyl ester [3.8 g, 6.51 mmol, Intermediate (9)]) in anhydrous tetrahydrofuran (40 mL) is cooled to 0° C. To it is added tetrabutylammonium fluoride (1M in tetrahydrofuran, 10 mL) drop wise. Stirred at 0° C. for 20 minutes then at room temperature for 20 minutes. Water (20 mL) is added and extracted three times with ethyl acetate (30 mL). The combined ethyl acetate phases are washed with brine and dried over sodium sulfate. The residue is chromatographed on 35 g silica gel (10-50% ethyl acetate in heptane) to give 2-(1-tert-butoxycarbonyl-1H-thieno[3,2-c]pyrazol-3-yl)-5-hydroxymethyl-indole-1-carboxylic acid tert-butyl ester [2.63 g, 85%, Intermediate (10)] as white solid; 1H NMR [(CD3)2SO)]: δ 8.05 (2H, m), 7.62 (1H, s), 7.38 (2H, m), 7.02 (1H, s), 5.21 (1H, t), 4.6 (2H, d), 1.64 (9H, s), 1.25 (9H, s); LC/MS: 470 (M+H).

後処理

  1. waitat room temperature for 20 minutes
  2. extractionextracted three times with ethyl acetate (30 mL)
  3. washThe combined ethyl acetate phases are washed with brine
  4. dry with materialdried over sodium sulfate
  5. customThe residue is chromatographed on 35 g silica gel (10-50% ethyl acetate in heptane)

出典と根拠

ORDレコード
ord-c1fba0f003524a1981d14b1821be8f28
出典データセット
uspto-grants-2011_04
特許番号
US07928231B2

反応ノート

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