Triethylamine → HCID 25026509, compound

HRID 2063399Notes

Reaction equation

HRID 2063399 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].CCN(CC)CC.C(OC(Cl)=O)C(C)C.O[NH:33][C:34](=[NH:47])[CH2:35][O:36][C:37]1[CH:42]=[CH:41][C:40]([S:43]([CH3:46])(=[O:45])=[O:44])=[CH:39][CH:38]=1>C1(C)C=CC=CC=1>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][CH:11]([C:14]2[O:16][N:47]=[C:34]([CH2:35][O:36][C:37]3[CH:38]=[CH:39][C:40]([S:43]([CH3:46])(=[O:45])=[O:44])=[CH:41][CH:42]=3)[N:33]=2)[CH2:12][CH2:13]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 62365Isobutyl chloroformateHCID 3928711-(tert-Butoxycarbonyl)-4-piperidinecarboxylic acidHCID 178504810HCID 178504810, compound

Product 1

HCID 25026509HCID 25026509, compound

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

To a solution of piperidine-1,4-dicarboxylic acid mono-tert-butyl ester (2.06 g, 9 mmol), NEt3 (1.2 g, 12 mmol) in toluene (150 mL) was added isobutylchloroformate (1.23 g, 9 mmol) at 0° C. The mixture was stirred at room temperature for 1.5 hours. N-hydroxy-2-(4-methanesulfonyl-phenoxy)-acetamidine (1.5 g, 6 mmol) was added to the mixture. The mixture was heated under reflux overnight, cooled and the mixture was washed successively with H2O and brine. After drying (Na2SO4), the solvent was removed. The residue was purified by flash chromatography on silica gel to afford the desired product. 1H NMR (CDCl3): δ 7.98 (2H, m), 7.14 (2H, m), 5.24 (2H, s), 4.2-4.05 (2H, m), 3.14 (1H, m), 3.03 (3H, s), 2.95 (2H, m), 2.12˜2.04 (2H, m), 1.80 (2H, m), 1.46 (9H, s).

Workup

  1. temperatureThe mixture was heated
  2. temperatureunder reflux overnight
  3. temperaturecooled
  4. washthe mixture was washed successively with H2O and brine
  5. dry with materialAfter drying (Na2SO4)
  6. customthe solvent was removed
  7. customThe residue was purified by flash chromatography on silica gel

Sources & evidence

ORD record
ord-a15d70c43531463e94009997eead9c11
Source dataset
uspto-grants-2012_10
Patent number
US08288384B2

Reaction notes

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