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

HRID 1176795Notes

Reaction equation

HRID 1176795 reaction equation
[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]

Participants

5

Reactant 3

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

Product 1

HCID 59694988(Rac)-1-[5-(biphenyl-4-yloxymethyl)-furan-2-carbonyl]-piperidine-2-carboxylic acid ethyl esterYield 59.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

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%).

Workup

  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

Sources & evidence

ORD record
ord-c1b4b04b693a4a328b727370c05a8f41
Source dataset
uspto-grants-2010_11
Patent number
US07842825B2

Reaction notes

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