反応式
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[CH:15]=[CH:16][C:17]([OH:22])=[C:18]([CH:21]=2)[CH:19]=O)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].CN1C(=O)CCC1.C(=O)([O-])[O-].[K+].[K+].Br[CH2:37][C:38]([O:40][CH2:41][CH3:42])=[O:39]>O>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][N:11]([C:14]2[CH:15]=[CH:16][C:17]3[O:22][C:37]([C:38]([O:40][CH2:41][CH3:42])=[O:39])=[CH:19][C:18]=3[CH:21]=2)[CH2:12][CH2:13]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]参加物
反応物 4
生成物 1
試薬・触媒・溶媒 1
実験手順
520 mg of 5-(4-tert-butoxycarbonylpiperazin-1-yl)-2-hydroxybenzaldehyde are added at 20° under nitrogen with stirring to 5 ml of NMP, and 0.25 g of potassium carbonate and 0.2 ml of ethyl bromoacetate are added to the solution. The mixture is stirred at 105° for 3 hours and then cooled to 25°. The batch is added to 30 ml of water (10°) with stirring, the aqueous phase is extracted at 10° with 3 times 30 ml of ethyl acetate, and the combined organic phases are washed with 30 ml of saturated NaCl solution and with 30 ml of water and then freed from solvent under reduced pressure (0.6 g of orange oil with crystal components). After chromatography on 30 g of silica gel (MTB ether/heptane 5:1), 0.45 g of pale-yellow crystals can be isolated (70%), m.p. 116-117°; MS 374 (M+), 318 (100%), 244, 232.
後処理
- additionare added to the solution
- temperaturecooled to 25°
- stirringwith stirring
- extractionthe aqueous phase is extracted at 10° with 3 times 30 ml of ethyl acetate
- washthe combined organic phases are washed with 30 ml of saturated NaCl solution and with 30 ml of water
出典と根拠
- ORDレコード
- ord-6489fa93f6634619ba40652399c39701
- 出典データセット
- uspto-grants-2004_07
- 特許番号
- US06762300B2
関連ノート
読み込み中…