Methane → 4,7-Dihydro-4,7-dioxo-6-propoxy-1H-cyclohepta[b]pyridine-2-carboxylic acid
反応式
C([O:3][C:4]([C:6]1[N:11](CCC)[C:10]2[CH:15]=[CH:16][C:17](=[O:24])[C:18]([O:20][CH2:21][CH2:22][CH3:23])=[CH:19][C:9]=2[C:8](=[O:25])[CH:7]=1)=[O:5])C.Cl.C>>[O:25]=[C:8]1[CH:7]=[C:6]([C:4]([OH:5])=[O:3])[NH:11][C:10]2[CH:15]=[CH:16][C:17](=[O:24])[C:18]([O:20][CH2:21][CH2:22][CH3:23])=[CH:19][C:9]1=2参加物
4
実験手順
A mixture of 4,7-dihydro-4,7-dioxo-6-propoxy-1-propyl-1H-cyclohepta[b]pyridine-2-carboxlic acid ethyl ester (3.8 g, described in Example 22) and 19% hydrochloric acid (113 ml) is refluxed for 30 minutes. Charcoal is added and the hot mixture is filtered. The filtrate is cooled to room temperature and the crystalline precipitate is collected and dried to obtain the title compound, mp > 250° C.
後処理
- temperatureis refluxed for 30 minutes
- filtrationthe hot mixture is filtered
- customthe crystalline precipitate is collected
- customdried
出典と根拠
- ORDレコード
- ord-768ff5e905c442d292fe4bdf6acf1096
- 出典データセット
- uspto-grants-1978_12
- 特許番号
- US04130649
反応ノート
読み込み中…