4-Toluenesulfonyl chloride → Methyl(4S)-4-[(tert-butoxy)carbonylamino]-5-[(4-methylphenyl)sulfonyloxy]pentanoate

HRID 2111553ノート

反応式

HRID 2111553 の反応式
[C:1]([O:5][C:6]([NH:8][C@H:9]([CH2:16][OH:17])[CH2:10][CH2:11][C:12]([O:14][CH3:15])=[O:13])=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:18]1([CH3:28])[CH:23]=[CH:22][C:21]([S:24](Cl)(=[O:26])=[O:25])=[CH:20][CH:19]=1.C(N(CC)CC)C>C(Cl)Cl>[C:1]([O:5][C:6]([NH:8][C@H:9]([CH2:16][O:17][S:24]([C:21]1[CH:22]=[CH:23][C:18]([CH3:28])=[CH:19][CH:20]=1)(=[O:26])=[O:25])[CH2:10][CH2:11][C:12]([O:14][CH3:15])=[O:13])=[O:7])([CH3:2])([CH3:4])[CH3:3]

参加物

5

反応物 3

HCID 73974-Toluenesulfonyl chlorideHCID 8471TriethylamineHCID 11107667(S)-methyl 4-(tert-butoxycarbonylamino)-5-hydroxypentanoate

生成物 1

HCID 15933198Methyl(4S)-4-[(tert-butoxy)carbonylamino]-5-[(4-methylphenyl)sulfonyloxy]pentanoate収率 54.2%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

Methyl (4S)-4-[(tert-butoxy)carbonylamino]-5-hydroxypentanoate (9.11 mmol, 2.25 g) was dissolved in 30 mL of methylene chloride. p-Toluenesulfonyl chloride (9.1 mmol, 1.7 g) and triethylamine (27.33 mmol, 3.8 mL) were added and the reaction was stirred at room temperature overnight. Solvent was removed in vacuo and crude was purified by column chromatography (SiO2, 4:1 n-hexanes/ethyl acetate to 7:3 n-hexanes/ethyl acetate) to yield the title compound (1.98 g, 54% yield). ES-MS: 402 (M+1).

後処理

  1. customSolvent was removed in vacuo and crude
  2. customwas purified by column chromatography (SiO2, 4:1 n-hexanes/ethyl acetate to 7:3 n-hexanes/ethyl acetate)

出典と根拠

ORDレコード
ord-dc0bc6df8c914acf8cec92b8ac731405
出典データセット
uspto-grants-2009_04
特許番号
US07521446B2

反応ノート

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