反応式
O.NN.[OH-].[K+].O=[C:7]([C:16]1[CH:20]=[CH:19][S:18][CH:17]=1)[CH2:8][CH:9](C(O)=O)[C:10]([OH:12])=[O:11].Cl.[Na+].[Cl-]>C(O)CO>[S:18]1[CH:19]=[CH:20][C:16]([CH2:7][CH2:8][CH2:9][C:10]([OH:12])=[O:11])=[CH:17]1参加物
7
実験手順
Hydrazine hydrate (1.3 mL, 1.34 g, 26.8 mmol) was added dropwise to a solution of KOH (3.54 g, 63 mmol) and 2-[2-oxo-2-(3-thienyl) ethyl] malonic acid 8(c) (4.00 g, 17.5 mmol) in ethylene glycol (30 mL). This solution was heated at reflux for 6 hours. After cooling to room temperature, the crude reaction mixture was poured into a mixture of 6N HCl (50 mL) and ice (200 g). This aqueous mixture was saturated with NaCl, then extracted with ether (3×70 mL). The combined organic extracts were dried over Na 2SO4 and concentrated, in vacuo, to provide an orange oil (2.61 g) of sufficient purity to be employed in the subsequent reaction without any further purification.
後処理
- temperatureThis solution was heated
- temperatureat reflux for 6 hours
- customthe crude reaction mixture
- extractionextracted with ether (3×70 mL)
- customThe combined organic extracts were dried over Na 2SO4
- concentrationconcentrated, in vacuo
出典と根拠
- ORDレコード
- ord-4adffb95b60444e285d5ede104d0136a
- 出典データセット
- uspto-grants-2001_03
- 特許番号
- US06207670B1
関連ノート
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