Sodium Sulfite → HCID 14044044, 화합물

HRID 1694057노트

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HRID 1694057 반응식
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)=[CH:4][N:3]=1.S([O-])([O-])=[O:16].[Na+].[Na+]>C(Cl)Cl>[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][C:9]2[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=2)=[CH:4][N+:3]=1[O-:16]

참가 물질

4

반응물 2

HCID 24437Sodium SulfiteHCID 126734972-Methyl-5-phenoxypyridine

생성물 1

HCID 14044044HCID 14044044, 화합물

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

A mixture of 2-methyl-5-phenoxy-pyridine (3.6 g, 19 mmol) described in Manufacturing Example 121-1-1,3-chloroperoxybenzoic acid (5.6 g, 33 mmol), and methylene chloride (80 mL) was stirred at room temperature for 45 minutes. Aqueous sodium sulfite was added to the reaction solution, and the organic layer was separated and was washed with 5 N aqueous sodium hydroxide (7 mL). The organic layer was dried over anhydrous magnesium sulfate, and then the solvent was evaporated under a reduced pressure to obtain 2-methyl-5-phenoxy-pyridine 1-oxide (3.3 g). 2-methyl-5-phenoxy-pyridine 1-oxide (3.3 g, 16 mmol) and acetic anhydride (20 mL) were stirred for 40 minutes at 115° C. Acetic anhydride was evaporated under a reduced pressure, aqueous sodium bicarbonate and ethyl acetate were added to the residue, and the organic layer was separated. The ethyl acetate solution was concentrated under a reduced pressure, and the residue was purified by silica gel column chromatography (heptane:ethyl acetate=2:1) to obtain an acetic acid 5-phenoxy-pyridin-2-ylmethyl ester (3.0 g). Acetic acid 5-phenoxy-pyridin-2-ylmethyl ester (3.0 g, 12 mmol), 5 N aqueous sodium hydroxide (8.0 mL), and methanol (20 mL) were stirred for 20 minutes at 60° C. Water and ethyl acetate were added to the reaction solution, and the organic layer was separated. The ethyl acetate layer was dried over anhydrous magnesium sulfate, and then the solvent was evaporated under a reduced pressure to obtain the title compound (2.6 g, 65%).

후처리

  1. customthe organic layer was separated
  2. washwas washed with 5 N aqueous sodium hydroxide (7 mL)
  3. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated under a reduced pressure

출처 및 근거

ORD 기록
ord-085565069f464aee85aa02946a88a725
출처 데이터셋
uspto-grants-2012_04
특허 번호
US08158657B2

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