Triethylamine → 4-[4-Phenyl-1-(3-phenyl-propyl)-butylcarbamoyl]-piperidine-1-carboxylic acid tert-butyl ester

HRID 1454124Notes

Reaction equation

HRID 1454124 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]([OH:16])=O)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.[C:18]1([CH2:24][CH2:25][CH2:26][CH:27]([NH2:37])[CH2:28][CH2:29][CH2:30][C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.C(N(CC)CC)C.Cl.CN(C)CCCN=C=NCC>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][CH:11]([C:14](=[O:16])[NH:37][CH:27]([CH2:26][CH2:25][CH2:24][C:18]2[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=2)[CH2:28][CH2:29][CH2:30][C:31]2[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=2)[CH2:12][CH2:13]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 3928711-(tert-Butoxycarbonyl)-4-piperidinecarboxylic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 218922551,7-Diphenyl-4-aminoheptane hydrochloride

Product 1

HCID 121367444-[4-Phenyl-1-(3-phenyl-propyl)-butylcarbamoyl]-piperidine-1-carboxylic acid tert-butyl esterYield 36.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

1-tert-Butoxycarbonyl-piperidine-4-carboxylic acid (1 g; 4.36 mmol) is dissolved in methylene chloride (25 mL) at ambient temperature. 1,7-Diphenyl-4-aminoheptane hydrochloride (1) (1.33 g; 4.38 mmol), triethylamine (1.22 mL; 8.75 mmol), and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (0.92 g; 4.8 mmol) are added sequentially. The mixture is stirred for 18 hours at ambient temperature then concentrated in vacuo at 40° C. The residue is diluted with ethyl acetate (150 mL) and washed successively with water (150 mL), 0.1 N HCl (100 mL), saturated aqueous sodium bicarbonate (50 mL), and saturated brine (50 mL). The organic layer is dried over MgSO4, filtered, and concentrated in vacuo. The residue is purified via silica gel chromatography with gradient elution (5%→40% ethyl acetate in hexanes) affording the desired product (0.77 g) as a solid.

Workup

  1. concentrationthen concentrated in vacuo at 40° C
  2. additionThe residue is diluted with ethyl acetate (150 mL)
  3. washwashed successively with water (150 mL), 0.1 N HCl (100 mL), saturated aqueous sodium bicarbonate (50 mL), and saturated brine (50 mL)
  4. dry with materialThe organic layer is dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue is purified via silica gel chromatography with gradient elution (5%→40% ethyl acetate in hexanes)

Sources & evidence

ORD record
ord-59aead3d7e074d5e897caea49e705470
Source dataset
uspto-grants-2009_01
Patent number
US07476680B2

Reaction notes

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