Ethyl piperidine-2-carboxylate → (Rac)-1-[5-(biphenyl-4-yloxymethyl)-furan-2-carbonyl]-piperidine-2-carboxylic acid ethyl ester

HRID 643813Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 643813
[C:1]1([C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH:6]=[CH:5][C:4]([O:7][CH2:8][C:9]2[O:13][C:12]([C:14]([OH:16])=O)=[CH:11][CH:10]=2)=[CH:3][CH:2]=1.[NH:23]1[CH2:33][CH2:32][CH2:31][CH2:30][CH:24]1[C:25]([O:27][CH2:28][CH3:29])=[O:26].Cl.C(N=C=NCCCN(C)C)C>O1CCCC1>[CH2:28]([O:27][C:25]([CH:24]1[CH2:30][CH2:31][CH2:32][CH2:33][N:23]1[C:14]([C:12]1[O:13][C:9]([CH2:8][O:7][C:4]2[CH:3]=[CH:2][C:1]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[CH:6][CH:5]=2)=[CH:10][CH:11]=1)=[O:16])=[O:26])[CH3:29]

Komponenten

5

Edukt 3

HCID 27517Ethyl piperidine-2-carboxylateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 46831535-[(4-Phenylphenoxy)methyl]furan-2-carboxylic acid2×

Produkt 1

HCID 59694988(Rac)-1-[5-(biphenyl-4-yloxymethyl)-furan-2-carbonyl]-piperidine-2-carboxylic acid ethyl esterAusbeute 59,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A solution of 5-(biphenyl-4-yloxymethyl)-furan-2-carboxylic acid (of Intermediate 8; 0.098 g, 0.33 mmol), ethyl pipecolinate (Aldrich-0.139 g 0.88 mmol), 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride (Avocado; 0.13 g, 0.68 mmol), and N,N-dimethylaminopyridine (0.083 g, 0.68 mmol) in tetrahydrofuran (10 mL) was stirred at room temperature for 16 h. The solvents were evaporated under reduced pressure, and water and ethyl acetate were added. The aqueous phase was extracted three times with ethyl acetate, and the combined organic layers were dried (sodium sulfate) filtered, evaporated, and purified using a Biotage Flash 40 purification system, eluting with methylene chloride/acetone 9:1, to give (rac)-1-[5-(biphenyl-4-yloxymethyl)-furan-2-carbonyl]-piperidine-2-carboxylic acid ethyl ester as a colorless oil (0.085 g, 59%).

Aufarbeitung

  1. customThe solvents were evaporated under reduced pressure, and water and ethyl acetate
  2. additionwere added
  3. extractionThe aqueous phase was extracted three times with ethyl acetate
  4. dry with materialthe combined organic layers were dried (sodium sulfate)
  5. filtrationfiltered
  6. customevaporated
  7. custompurified
  8. customa Biotage Flash 40 purification system
  9. washeluting with methylene chloride/acetone 9:1

Quellen und Nachweise

ORD-Eintrag
ord-f5e21b26c3e74886ace88f1a0c4756fb
Quelldatensatz
uspto-grants-2010_04
Patentnummer
US07700632B2

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