Tetrahydrofuran → Tert-butyl 4-[4-(4-morpholinylmethyl)anilino]-1-piperidinecarboxylate

HRID 1068040

반응식

HRID 1068040 반응식
[NH2:1][C:2]1[CH:14]=[CH:13][C:5]([CH2:6][N:7]2[CH2:12][CH2:11][O:10][CH2:9][CH2:8]2)=[CH:4][CH:3]=1.O1CCCC1.O=[C:21]1[CH2:26][CH2:25][N:24]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:23][CH2:22]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(O)(=O)C>[N:7]1([CH2:6][C:5]2[CH:13]=[CH:14][C:2]([NH:1][CH:21]3[CH2:26][CH2:25][N:24]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:23][CH2:22]3)=[CH:3][CH:4]=2)[CH2:12][CH2:11][O:10][CH2:9][CH2:8]1

참가 물질

6

반응물 4

HCID 8028TetrahydrofuranHCID 735900tert-Butyl 4-oxopiperidine-1-carboxylateHCID 7768514-(Morpholinomethyl)anilineHCID 5049666Sodium triacetoxyborohydride

생성물 1

HCID 21192593Tert-butyl 4-[4-(4-morpholinylmethyl)anilino]-1-piperidinecarboxylate

시약·촉매·용매 1

HCID 176Acetic Acid용매

실험 절차

A flask containing 4-(4-aminobenzyl)morpholine from Preparation No. 22 (0.48 g) is treated with tetrahydrofuran (10 mL) and tert-butyl 4-oxo-1-piperidinecarboxylate (0.60 gm) under an argon atmosphere. The solution is treated with acetic acid (0.20 mL) followed by sodium triacetoxyborohydride (0.80 g). After stirring 3 days, the mixture is concentrated under reduced pressure. The residue is partitioned between dichloromethane and dilute aqueous sodium hydroxide. The aqueous is back-extracted with additional portions of dichloromethane. The combined organic layer is washed with brine, dried over sodium sulfate, and concentrated under reduced pressure. The residue is flash column chromatographed on silica gel eluting with 2% to 6% methanol in dichloromethane to afford 0.96 g of tert-butyl 4-[4-(4-morpholinylmethyl)anilino]-1-piperidinecarboxylate as a tan solid.

후처리

  1. customfrom Preparation No
  2. concentrationthe mixture is concentrated under reduced pressure
  3. customThe residue is partitioned between dichloromethane and dilute aqueous sodium hydroxide
  4. extractionThe aqueous is back-extracted with additional portions of dichloromethane
  5. washThe combined organic layer is washed with brine
  6. dry with materialdried over sodium sulfate
  7. concentrationconcentrated under reduced pressure
  8. customchromatographed on silica gel eluting with 2% to 6% methanol in dichloromethane

출처 및 근거

ORD 기록
ord-a5343a0bf97e4248adc7f61cfc25499a
출처 데이터셋
uspto-grants-2001_06
특허 번호
US06248739B1

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