Hydrochloric Acid → tert-butyl 3-amino-1H-thieno[2,3-c]pyrazole-5-carboxylate
反応式
[C:1]([C:3]1[CH:4]=[C:5]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[S:6][C:7]=1[NH:8][NH2:9])#[N:2].Cl>CO.C(OCC)(=O)C>[NH2:2][C:1]1[C:3]2[CH:4]=[C:5]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[S:6][C:7]=2[NH:8][N:9]=1参加物
5
実験手順
A mixture of tert-butyl 4-cyano-5-hydrazinothiophene-2-carboxylate (1.0 g, 4.2 mmol) and hydrochloric acid (0.7 mL of a 37% solution) in methyl alcohol (15 mL) was stirred at room temperature for 14 hours. The reaction mixture was diluted with ethyl acetate (50 mL) and washed with an aqueous solution of sodium bicarbonate. Organic layer was separated, dried over anhydrous sodium sulfate and evaporated to afford 0.9 g of the title compound.
後処理
- washwashed with an aqueous solution of sodium bicarbonate
- customOrganic layer was separated
- dry with materialdried over anhydrous sodium sulfate
- customevaporated
出典と根拠
- ORDレコード
- ord-888b4c510aca4bbb9e06d029fd575adf
- 出典データセット
- uspto-grants-2011_05
- 特許番号
- US07943654B2
反応ノート
読み込み中…