Aluminium lithium hydride → 7-fluoro-3,4-dihydro-1,5-benzothiazepin-5(2H)-amine

HRID 1789951노트

반응식

HRID 1789951 반응식
[F:1][C:2]1[CH:3]=[CH:4][C:5]2[S:11][CH2:10][CH2:9][CH2:8][N:7]([N:12]=O)[C:6]=2[CH:14]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-]>C1COCC1>[F:1][C:2]1[CH:3]=[CH:4][C:5]2[S:11][CH2:10][CH2:9][CH2:8][N:7]([NH2:12])[C:6]=2[CH:14]=1

참가 물질

4

반응물 2

HCID 21226445Aluminium lithium hydrideHCID 220367967-Fluoro-5-nitroso-2,3,4,5-tetrahydro-1,5-benzothiazepine

생성물 1

HCID 220368027-fluoro-3,4-dihydro-1,5-benzothiazepin-5(2H)-amine수율 112.6%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

반응 조건

온도
0 °C

실험 절차

7-fluoro-5-nitroso-2,3,4,5-tetrahydro-1,5-benzothiazepine (449 mg, 2.11 mmol) was suspended in THF (1 mL of freshly distilled) and cooled to 0° C. in an ice bath. Lithium aluminum hydride (80 mg, 2.11 mmol) was added in a portion-wise fashion. The flask was removed from the ice bath and allowed to warm to room temperature and was stirred for 2 hours. Water (0.08 mL) was added and stirred for 10 minutes. 15% sodium hydroxide (0.08 mL) was added stirred for 10 minutes. Water (0.024 mL) was added and stirred for 10 minutes. The reaction was extracted with dichloromethane (2×25 mL). The organics were concentrated to a residue, then taken up in minimal amount of dichloromethane and then hydrogen chloride in ether (1 M) was added until precipatation formed, the precipatate was filtered off to give 7-fluoro-3,4-dihydro-1,5-benzothiazepin-5(2H)-amine (471 mg, 95%). 1H NMR (CD-3OD, 300 MHz): δ 7.59 (t, 1H, J=7.5 Hz), 7.28 (d, 1H, J=9.9 Hz), 7.00 (t, 1H, J=8.2 Hz), 3.52 (t, 1H, J=7.5 Hz), 2.92–2.86 (m, 1H), 2.72–2.70 (m, 2H), 2.40–2.31 (m, 1H), 2.2–2.18 (m, 2H) ppm.

후처리

  1. distillationof freshly distilled) and
  2. customThe flask was removed from the ice bath
  3. temperatureto warm to room temperature
  4. additionWater (0.08 mL) was added
  5. stirringstirred for 10 minutes
  6. addition15% sodium hydroxide (0.08 mL) was added
  7. stirringstirred for 10 minutes
  8. additionWater (0.024 mL) was added
  9. stirringstirred for 10 minutes
  10. extractionThe reaction was extracted with dichloromethane (2×25 mL)
  11. concentrationThe organics were concentrated to a residue
  12. additionhydrogen chloride in ether (1 M) was added until precipatation
  13. customformed
  14. filtrationthe precipatate was filtered off

출처 및 근거

ORD 기록
ord-4e843f65c8ef4057bfad5f051d6bccd1
출처 데이터셋
uspto-grants-2006_07
특허 번호
US07071186B2

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