Sodium Hydroxide → HCID 57939018, 화합물

HRID 419933노트

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HRID 419933 반응식
[F:1][C:2]1[CH:3]=[CH:4][C:5]2[N:9]=[CH:8][N:7]([CH2:10][CH2:11][OH:12])[C:6]=2[C:13]=1[F:14].P([O-])([O-])([O-])=[O:16].[Na+].[Na+].[Na+].CC1(C)N([O])C(C)(C)CCC1.[O-]Cl=O.[Na+].[O-]Cl.[Na+].[O-]S([O-])=O.[Na+].[Na+].[OH-].[Na+]>O.CC#N>[F:1][C:2]1[CH:3]=[CH:4][C:5]2[N:9]=[CH:8][N:7]([CH2:10][C:11]([OH:16])=[O:12])[C:6]=2[C:13]=1[F:14]

참가 물질

10

반응물 7

HCID 14798Sodium HydroxideHCID 24243Trisodium PhosphateHCID 24437Sodium SulfiteHCID 2724126Tempo2회HCID 23665760Sodium HypochloriteHCID 23668197Sodium Chlorite2회HCID 579390212-(6,7-difluoro-1H-benzimidazol-1-yl)ethanol

생성물 1

HCID 57939018HCID 57939018, 화합물

시약·촉매·용매 2

HCID 962Water용매HCID 6342Acetonitrile용매

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온도
42 °C

실험 절차

2-(6,7-difluoro-1H-benzimidazol-1-yl)ethanol (2.96 g, 15 mmol) is taken into 75 ml of MeCN and sodium phosphate buffer (56 ml, 0.67 M, pH 6.8) and the mixture is heated to 42° C. TEMPO (165 mg, 1.05 mol) is added followed by the simultaneous dropwise addition of a solution of NaClO2 (3.38 g, 80% pure, 30 mmol in 15 ml water) and a solution of bleach (350 μL of 6% NaOCl in 7.5 mL water) over 1.5 hours. After 48 hrs, the same quantities of NaClO2 and bleach are added. After a further 24 hours, TEMPO (165 mg, 1.05 mol) is added and the reaction is stirred for 72 hrs. The darkened reaction is allowed to cool to room temperature followed by the dropwise addition of 30 ml of a saturated solution of Na2SO3 (exothermic). The reaction becomes almost colourless. Using 2 N NaOH, the pH is raised to 9.2 and the reaction is extracted 4 times with ethyl acetate. The pH is then lowered to 3.8 with 2 N HCl and the solution allowed to stand for 48 hours. 1.98 grams of white crystalline material is recovered. The mother liquor is reduced to half the volume and allowed to stand. A further 260 mg is collected. (Combined yield 2.23 g, 70%)

후처리

  1. waitAfter a further 24 hours
  2. customThe darkened reaction
  3. temperatureto cool to room temperature
  4. temperaturethe pH is raised to 9.2
  5. extractionthe reaction is extracted 4 times with ethyl acetate
  6. waitto stand for 48 hours
  7. custom1.98 grams of white crystalline material is recovered
  8. customA further 260 mg is collected

출처 및 근거

ORD 기록
ord-30f47cbe4f4b43768cec6fba7773bde9
출처 데이터셋
uspto-grants-2012_01
특허 번호
US08093402B2

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