Sodium Hydroxide → 3-[4-[2-Fluoro-2-(2-fluorophenyl)ethyl]piperidino]methyl-1H-pyrazin-2-one

HRID 606230ノート

反応式

HRID 606230 の反応式
[F:1][CH:2]([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=1[F:16])[CH2:3][CH:4]1[CH2:9][CH2:8][NH:7][CH2:6][CH2:5]1.C([O:21][C:22]1[C:23]([CH:28]=O)=[N:24][CH:25]=[CH:26][N:27]=1)(C)(C)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].[OH-].[Na+]>O1CCCC1.C(OCC)(=O)C>[F:1][CH:2]([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=1[F:16])[CH2:3][CH:4]1[CH2:5][CH2:6][N:7]([CH2:28][C:23]2[C:22](=[O:21])[NH:27][CH:26]=[CH:25][N:24]=2)[CH2:8][CH2:9]1

参加物

7

反応物 4

HCID 14798Sodium HydroxideHCID 5049666Sodium triacetoxyborohydrideHCID 222482803-(tert-Butoxy)pyrazine-2-carbaldehydeHCID 222485974-[2-Fluoro-2-(2-fluorophenyl)ethyl]piperidine

生成物 1

HCID 222479623-[4-[2-Fluoro-2-(2-fluorophenyl)ethyl]piperidino]methyl-1H-pyrazin-2-one収率 5.3%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

実験手順

After dissolving 64 mg of 4-[2-fluoro-2-(2-fluorophenyl)ethyl]piperidine in 3 ml of tetrahydrofuran, 61 mg of 3-tert-butoxy-2-pyrazinecarboxaldehyde and 90 mg of sodium triacetoxyborohydride were added while stirring, and the stirring was continued overnight at room temperature. A 1N sodium hydroxide solution was added to the reaction mixture and extraction was performed with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. The residue was purified by NH silica gel column chromatography (solvent: n-hexane/ethyl acetate). Two milliliters of a 4N hydrogen chloride/ethyl acetate solution was added to the obtained product while stirring, and the stirring was continued for 2.5 hours at room temperature. A 1N sodium hydroxide solution was added to the reaction solution and extraction was performed with dichloromethane. The organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. Diethyl ether/n-hexane was added to the residue and the insoluble portion was filtered out to obtain the title compound (5 mg, 5% yield).

後処理

  1. additionwere added
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled off under reduced pressure
  5. customThe residue was purified by NH silica gel column chromatography (solvent: n-hexane/ethyl acetate)
  6. additionTwo milliliters of a 4N hydrogen chloride/ethyl acetate solution was added to the obtained product
  7. stirringwhile stirring
  8. waitthe stirring was continued for 2.5 hours at room temperature
  9. additionA 1N sodium hydroxide solution was added to the reaction solution and extraction
  10. washThe organic layer was washed with saturated brine
  11. dry with materialdried over anhydrous magnesium sulfate
  12. distillationthe solvent was distilled off under reduced pressure
  13. additionDiethyl ether/n-hexane was added to the residue
  14. filtrationthe insoluble portion was filtered out

出典と根拠

ORDレコード
ord-6474ad18de4648b0bce07a7dbdb3a76c
出典データセット
uspto-grants-2011_03
特許番号
US07915274B2

反応ノート

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