Water → methyl 6-chloro-5-((tetrahydro-2H-pyran-2-yl)oxy)nicotinate

HRID 709786ノート

反応式

HRID 709786 の反応式
[Cl:1][C:2]1[C:11]([OH:12])=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][N:3]=1.[O:13]1[CH:18]=[CH:17][CH2:16][CH2:15][CH2:14]1.C1(C)C=CC(S([O-])(=O)=O)=CC=1.[NH+]1C=CC=CC=1.O>C1(C)C=CC=CC=1>[Cl:1][C:2]1[C:11]([O:12][CH:14]2[CH2:15][CH2:16][CH2:17][CH2:18][O:13]2)=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][N:3]=1

参加物

6

反応物 4

HCID 962WaterHCID 80803,4-dihydro-2H-pyranHCID 466102Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1)HCID 46941479Methyl 6-chloro-5-hydroxynicotinate

生成物 1

HCID 117759840methyl 6-chloro-5-((tetrahydro-2H-pyran-2-yl)oxy)nicotinate

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

反応条件

温度
60 °C

実験手順

Under a nitrogen atmosphere, to a solution of methyl 6-chloro-5-hydroxynicotinate (703 mg) in toluene (15 mL) were added 3,4-dihydro-2H-pyran (685 μL) and pyridinium p-toluenesulfonate (94 mg), and the mixture was stirred at room temperature for 2 hr and further at 60° C. for 1.5 hr. The reaction mixture was poured into water at room temperature, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (546 mg) as a white solid.

後処理

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-508645f2e1cd4c9fbd080a8d69ac5fdf
出典データセット
uspto-grants-2015_11
特許番号
US09181186B2

反応ノート

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