Morpholine → 2-Methoxy-3-morpholino-5-nitropyridine

HRID 340496

反応式

HRID 340496 の反応式
[NH:1]1[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.C(=O)([O-])[O-].[Cs+].[Cs+].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.Br[C:56]1[C:57]([O:65][CH3:66])=[N:58][CH:59]=[C:60]([N+:62]([O-:64])=[O:63])[CH:61]=1>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O.O1CCOCC1>[CH3:66][O:65][C:57]1[C:56]([N:1]2[CH2:6][CH2:5][O:4][CH2:3][CH2:2]2)=[CH:61][C:60]([N+:62]([O-:64])=[O:63])=[CH:59][N:58]=1

参加物

8

反応物 4

HCID 8083MorpholineHCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 215844513-Bromo-2-methoxy-5-nitropyridine

生成物 1

HCID 680279252-Methoxy-3-morpholino-5-nitropyridine

試薬・触媒・溶媒 3

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 962Water溶媒HCID 312751,4-Dioxane溶媒

反応条件

温度
100 °C

実験手順

Morpholine (54 μl), cesium carbonate (336 mg), Pd2(dba)3 (57 mg), and Xantphos (72 mg) were added to a 1,4-dioxane (3 ml) solution containing 3-bromo-2-methoxy-5-nitropyridine (96 mg) in a nitrogen atmosphere, followed by stirring at 100° C. for 10 hours. The reaction solution was adjusted to room temperature, and water was added, followed by extraction with ethyl acetate. The resultant was washed with saturated saline and dried over anhydrous sodium sulfate, and the solvent was distilled away under reduced pressure. The obtained residue was purified by silica gel chromatography (n-hexane:ethyl acetate=4:1 to 2:1), and a yellow solid of 2-methoxy-3-morpholino-5-nitropyridine (54 mg) was thus obtained.

後処理

  1. customwas adjusted to room temperature
  2. extractionfollowed by extraction with ethyl acetate
  3. washThe resultant was washed with saturated saline
  4. dry with materialdried over anhydrous sodium sulfate
  5. distillationthe solvent was distilled away under reduced pressure
  6. customThe obtained residue was purified by silica gel chromatography (n-hexane:ethyl acetate=4:1 to 2:1)

出典と根拠

ORDレコード
ord-e6228cc4208c45e58a6673a39f137a14
出典データセット
uspto-grants-2014_11
特許番号
US08895585B2

関連ノート

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