Methanol → HCID 178499252、化合物

HRID 2099659

反応式

HRID 2099659 の反応式
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([Br:19])=[CH:8][C:9]=1[NH:10][CH:11]1[CH2:16][O:15][C:14]([CH3:18])([CH3:17])[O:13][CH2:12]1)=[O:4].N1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.[CH3:26]O.C([O:31][CH2:32][CH3:33])(=O)C>C1(C)C=CC=CC=1>[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([Br:19])=[CH:8][C:9]=1[N:10]([CH:11]1[CH2:16][O:15][C:14]([CH3:17])([CH3:18])[O:13][CH2:12]1)[C:32]([C@H:33]1[CH2:25][CH2:24][C@H:23]([CH3:26])[CH2:22][CH2:21]1)=[O:31])=[O:4]

参加物

6

反応物 4

HCID 887MethanolHCID 1049Pyridine3 回HCID 8857Ethyl AcetateHCID 577954295-Bromo-3-(2,2-dimethyl-[1,3]dioxan-5-ylamino)-thiophene-2-carboxylic acid methyl ester

生成物 1

HCID 178499252HCID 178499252、化合物

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒3 回

反応条件

温度
5 °C

実験手順

To a mixture of 5-bromo-3-(2,2-dimethyl-[1,3]dioxan-5-ylamino)-thiophene-2-carboxylic acid methyl ester (200 mg, 0.57 mmol) in toluene (1 mL) and pyridine (100 μl, 1.23 mmol), acid chloride in toluene prepared above (1.1 mL, 1.05 mmol) was added. The reaction mixture was refluxed for 16 h. TLC showed the presence of starting material. Pyridine (50 μl, 0.62 mmol) and acid chloride in totuene (0.5 mL, 0.47 mmol) were added and the refluxing was continued for 24 h. The mixture was cooled to 5° C. Toluene (2 mL) and pyridine (0.2 mL) were added. After stirring for 5 min MeOH (0.5 mL) was added and the mixture was stirred for 10 min. It was diluted with ethyl acetate, washed with saturated NaHCO3 and brine, dried and evaporated. The crude reaction mixture was chromatographed over silica gel (hexane-ethyl acetate mixtures as eluents) yielding 5-bromo-3-[(2,2-dimethyl-[1,3]dioxan-5-yl)-(trans-4-methyl-cyclohexanecarbonyl)-amino]-thiophene-2-carboxylic acid methyl ester (35 mg) contaminated with a small impurity. This material was used for the next step.

後処理

  1. customprepared above (1.1 mL, 1.05 mmol)
  2. additionwas added
  3. temperatureThe reaction mixture was refluxed for 16 h
  4. additionwas added
  5. washwashed with saturated NaHCO3 and brine
  6. customdried
  7. customevaporated
  8. customThe crude reaction mixture
  9. customwas chromatographed over silica gel (hexane-ethyl acetate mixtures as eluents)

出典と根拠

ORDレコード
ord-2286d706ee8f4a3c8616a93c69ca4fb8
出典データセット
uspto-grants-2009_08
特許番号
US07569600B2

関連ノート

読み込み中…