反応式
[NH:1]1[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.[CH3:7][N:8]1[CH:12]=[CH:11][CH:10]=[C:9]1[CH:13]=[O:14].[CH2:15]=O>C(O)(=O)C.O>[CH3:7][N:8]1[CH:12]=[C:11]([CH2:15][N:1]2[CH2:6][CH2:5][O:4][CH2:3][CH2:2]2)[CH:10]=[C:9]1[CH:13]=[O:14].[CH3:7][N:8]1[C:12]([CH2:15][N:1]2[CH2:6][CH2:5][O:4][CH2:3][CH2:2]2)=[CH:11][CH:10]=[C:9]1[CH:13]=[O:14]参加物
反応条件
- 温度
- 50 °C
実験手順
To a solution of morpholine (130 mmoles) in acetic acid (60 ml) at 0° C. there are added 1-methyl-1H-pyrrole-2-carbaldehyde (110 mmoles) and formaldehyde (110 mmoles) 37% in water. The reaction mixture is stirred for 16 hours at 50° C. After evaporation to dryness, about 100 ml of 25% aqueous sodium hydroxide solution are added. After extraction with DCM, the organic phase is washed with water and with saturated aqueous NaCl solution, dried over sodium sulphate, filtered and evaporated to dryness. The residue is purified by flash chromatography on silica gel (SiO2; gradient AcOEt/MeOH) to yield the title products 1-methyl-4-morpholin-4-ylmethyl-1H-pyrrole-2-carbaldehyde and 1-methyl-5-morpholin-4-ylmethyl-1H-pyrrole-2-carbaldehyde in a ratio of 1/5.
後処理
- customAfter evaporation to dryness, about 100 ml of 25% aqueous sodium hydroxide solution
- additionare added
- extractionAfter extraction with DCM
- washthe organic phase is washed with water and with saturated aqueous NaCl solution
- dry with materialdried over sodium sulphate
- filtrationfiltered
- customevaporated to dryness
- customThe residue is purified by flash chromatography on silica gel (SiO2; gradient AcOEt/MeOH)
出典と根拠
- ORDレコード
- ord-8838bff23f08415f88fe29d9cdc72eae
- 出典データセット
- uspto-grants-2013_09
- 特許番号
- US08541412B2
関連ノート
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