Hydrochloric Acid → HCID 178419169、化合物

HRID 1272602ノート

反応式

HRID 1272602 の反応式
[Cl-].[Ce+3].[Cl-].[Cl-].[BH4-:5].[Na+].[CH3:7][C:8]1[CH:13]=[CH:12][C:11]([PH:14](=O)[C:15]2[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][CH:16]=2)=[CH:10][CH:9]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-].Cl>C1COCC1.C1(C)C=CC=CC=1.O>[CH3:7][C:8]1[CH:9]=[CH:10][C:11]([PH:14][C:15]2[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][CH:16]=2)=[CH:12][CH:13]=1.[BH3:5]

参加物

9

反応物 5

HCID 313Hydrochloric AcidHCID 24636Cerium(III) chlorideHCID 4311764Sodium borohydrideHCID 21226445Aluminium lithium hydrideHCID 178427273HCID 178427273、化合物

生成物 1

HCID 178419169HCID 178419169、化合物収率 51.7%

試薬・触媒・溶媒 3

HCID 962Water溶媒HCID 1140Toluene溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

Under an argon atmosphere, a solution of cerium chloride (7.89 g, 3.0 equivalents) in THF (20 mL) was stirred at room temperature (25° C.) for 30 min. Sodium borohydride (1.25 g, 3.1 equivalents) was added, and the mixture was stirred at room temperature for 1 hr. Then bis(4-methylphenyl)phosphine oxide (2.5 g, 0.011 moL) synthesized in Reference Example 8 and lithium aluminum hydride (0.494 g, 1.2 equivalents) were successively added at 5° C., and the mixture was stirred at room temperature for 17 hrs. Water (10 mL) was added at 3° C. and then toluene (20 mL) and 6M-HCl (20 mL) were added. The mixture was stirred at room temperature for 30 min. The reaction mixture was partitioned, and the aqueous layer was extracted with toluene (30 mL) The combined organic layer was washed successively with 5% aqueous NaHCO3 solution (20 mL) and 5% aqueous NaCl solution (20 mL). Then the organic layer was dried over anhydrous magnesium sulfate, filtered by gravity, and the filtrate was concentrated under reduced pressure. The residue was purified by column chromatography (alumina 25 g, n-hexane/ethyl acetate=10/1). The residue was recrystallized from heptane to give the title compound (1.28 g, white crystals). yield 51.0%. melting point.: 78.6° C.

後処理

  1. additionwere successively added at 5° C.
  2. stirringthe mixture was stirred at room temperature for 17 hrs
  3. stirringThe mixture was stirred at room temperature for 30 min
  4. customThe reaction mixture was partitioned
  5. extractionthe aqueous layer was extracted with toluene (30 mL) The combined organic layer
  6. washwas washed successively with 5% aqueous NaHCO3 solution (20 mL) and 5% aqueous NaCl solution (20 mL)
  7. dry with materialThen the organic layer was dried over anhydrous magnesium sulfate
  8. filtrationfiltered by gravity
  9. concentrationthe filtrate was concentrated under reduced pressure
  10. customThe residue was purified by column chromatography (alumina 25 g, n-hexane/ethyl acetate=10/1)
  11. customThe residue was recrystallized from heptane

出典と根拠

ORDレコード
ord-57266ddec2a84fef9f8d29e456ef86bd
出典データセット
uspto-grants-2007_04
特許番号
US07208633B2

反応ノート

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