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Citric Acid → Tert-butyl 4-benzyl-4-hydroxypiperidine-1-carboxylate

HRID 2085815
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HRID 2085815 반응식
[OH:1][C:2]1([CH2:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[CH2:7][CH2:6][NH:5][CH2:4][CH2:3]1.[OH-].[Na+].[O:17](C(OC(C)(C)C)=O)[C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=O.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>O1CCOCC1>[CH2:8]([C:2]1([OH:1])[CH2:7][CH2:6][N:5]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:17])[CH2:4][CH2:3]1)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 4

HCID 311Citric AcidHCID 14798Sodium HydroxideHCID 90495Di-tert-butyl dicarbonateHCID 981524-Benzyl-4-piperidinol

생성물 1

HCID 10493799Tert-butyl 4-benzyl-4-hydroxypiperidine-1-carboxylate

시약·촉매·용매 1

HCID 312751,4-Dioxane용매

실험 절차

A solution of 4-hydroxy-4-benzyl piperidine (0.66 g, 3.5 mmol) in 1M NaOH (7 mL, 7 mmol) and dioxane (5 mL) at 0° C. was treated with BOC2O (0.76 g, 3.5 mmol), warmed to room temperature, stirred for 16 hours, adjusted to pH<7 with 10% citric acid, and extracted twice with ethyl acetate. The combined extracts were washed with water and brine, dried (Na2SO4), filtered, and concentrated to provide the desired product.

후처리

  1. extractionextracted twice with ethyl acetate
  2. washThe combined extracts were washed with water and brine
  3. dry with materialdried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated

출처 및 근거

ORD 기록
ord-382f0e773b4647b0b3a1b91325387266
출처 데이터셋
uspto-grants-2004_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06720338B2

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