1-tert-Butyl 6-methyl 1H-indole-1,6-dicarboxylate → tert-Butyl 6-(hydroxymethyl)-1H-indole-1-carboxylate

HRID 1774208ノート

反応式

HRID 1774208 の反応式
[H-].C([Al+]CC(C)C)C(C)C.[N:11]1([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[C:19]2[C:14](=[CH:15][CH:16]=[C:17]([C:20](OC)=[O:21])[CH:18]=2)[CH:13]=[CH:12]1>C1(C)C=CC=CC=1>[OH:21][CH2:20][C:17]1[CH:18]=[C:19]2[C:14]([CH:13]=[CH:12][N:11]2[C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])=[CH:15][CH:16]=1

参加物

4

反応物 2

HCID 208216591-tert-Butyl 6-methyl 1H-indole-1,6-dicarboxylateHCID 21225700Diisobutylaluminumhydride

生成物 1

HCID 23560816tert-Butyl 6-(hydroxymethyl)-1H-indole-1-carboxylate収率 65.9%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

反応条件

温度
-50 °C

実験手順

Diisobutylaluminum hydride (1M in toluene, 12 mL, 12 mmol) was added to a solution of 1-tert-butyl 6-methyl 1H-indole-1,6-dicarboxylate (1.38 g, 5.00 mmol) in toluene (15 mL) at −50° C. over 10 minutes. After being stirred at −50° C. for 30 minutes, the reaction was quenched with methanol (2.5 mL) and water (2.5 mL). The resulting precipitate was filtered off, and the filtrate was evaporated. The residue was purified by silica gel chromatography, eluting with petroleum ether/ethyl acetate (5:1 to 1:1) to afford tert-butyl 6-(hydroxymethyl)-1H-indole-1-carboxylate (815 mg, 55% yield) as an oil. LCMS (ESI) m/z 174.3 [M+H-18-56]+, 230.3 [M+H-18]+.

後処理

  1. customthe reaction was quenched with methanol (2.5 mL) and water (2.5 mL)
  2. filtrationThe resulting precipitate was filtered off
  3. customthe filtrate was evaporated
  4. customThe residue was purified by silica gel chromatography
  5. washeluting with petroleum ether/ethyl acetate (5:1 to 1:1)

出典と根拠

ORDレコード
ord-b0d148de6211498683d1556c70858187
出典データセット
uspto-grants-2016_02
特許番号
US09259470B2

反応ノート

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