反応式
C(N(C(C)C)C(C)C)C.[Br-].[Li+].Cl[CH2:13][CH2:14][CH2:15][CH2:16][O:17][CH:18]1[CH2:23][CH2:22][CH2:21][CH2:20][O:19]1.[CH3:24][N:25]1[C:30](=[O:31])[C:29]2[CH2:32][NH:33][CH2:34][CH2:35][C:28]=2[NH:27][C:26]1=[O:36]>CN(C)C=O>[CH3:24][N:25]1[C:30](=[O:31])[C:29]2[CH2:32][N:33]([CH2:13][CH2:14][CH2:15][CH2:16][O:17][CH:18]3[CH2:23][CH2:22][CH2:21][CH2:20][O:19]3)[CH2:34][CH2:35][C:28]=2[NH:27][C:26]1=[O:36]参加物
反応物 4
生成物 1
試薬・触媒・溶媒 1
実験手順
27 g of ethyldiisopropylamine, 18 g of lithium bromide and 46 g of 2-(4-chlorobutoxy) tetrahydropyran (86.3% pure according to GC) were added to 36.3 g of 3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione in 1 l of dimethylformamide, with stirring, and the mixture was stirred for 5 h at 70° C. It was concentrated under reduced pressure and 34.5 g of crude 3-methyl-6-[4-(tetrahydropyran-2-yloxy)butyl]-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione were obtained after working-up of the residue by extraction with dichloromethane and water and after drying and concentration of the combined dichloromethane phases, and this crude product was purified by column chromatography on aluminum oxide (actiVity grade III) and elution with dichloromethane/ethanol (volume ratio 90:10).
後処理
- stirringthe mixture was stirred for 5 h at 70° C
- concentrationIt was concentrated under reduced pressure
出典と根拠
- ORDレコード
- ord-7b2a6b2f8d0b47d7a07af6a44b1a050d
- 出典データセット
- uspto-grants-1996_09
- 特許番号
- US05556854
関連ノート
読み込み中…