Citric Acid → 1-[{(alpha-Benzoyloxybenzyloxy)carbonyl]aminomethyl}-1-Cyclohexane Acetic Acid

HRID 488560Notes

Reaction equation

HRID 488560 reaction equation
C([CH:9]([O:16][C:17]([NH:19][CH2:20][C:21]1([CH2:27][C:28]([OH:30])=[O:29])[CH2:26][CH2:25][CH2:24][CH2:23][CH2:22]1)=[O:18])[C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)(=O)C1C=CC=CC=1.[CH:31]1[CH:36]=[C:35](Cl)[CH:34]=[C:33]([C:38]([O:40]O)=[O:39])[CH:32]=1.C([O-])(O)=O.[Na+].C(O)(=O)CC(CC(O)=O)(C(O)=O)O>C(Cl)Cl>[C:38]([O:40][CH:9]([O:16][C:17]([NH:19][CH2:20][C:21]1([CH2:27][C:28]([OH:30])=[O:29])[CH2:22][CH2:23][CH2:24][CH2:25][CH2:26]1)=[O:18])[C:10]1[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=1)(=[O:39])[C:33]1[CH:34]=[CH:35][CH:36]=[CH:31][CH:32]=1

Participants

6

Reactant 4

HCID 311Citric AcidHCID 70297m-Chloroperbenzoic acidHCID 516892Sodium BicarbonateHCID 116544391-{[(alpha-Benzoylbenzyloxy)carbonyl]aminomethyl}-1-Cyclohexane Acetic Acid

Product 1

HCID 116115921-[{(alpha-Benzoyloxybenzyloxy)carbonyl]aminomethyl}-1-Cyclohexane Acetic AcidYield 49.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 1-{[(α-benzoylbenzyloxy)carbonyl]aminomethyl}-1-cyclohexane acetic acid (61) (1.89 g, 4.6 mmol) in 40 mL of CH2Cl2 was added 77% mCPBA (2.07 g, 9.2 mmol) and NaHCO3 (0.78 g, 9.2 mmol), respectively, at room temperature and the resulting mixture was stirred at room temperature overnight. The reaction mixture was acidified with 10% citric acid and extracted with CH2Cl2. The organic extract was washed with brine and dried over Na2SO4. After removing the solvent under reduced pressure, the residue was purified by reverse phase preparative HPLC (acetonitrile-water, 0.1% formic acid) to afford 960 mg (49%) of the title compound (59). 1H NMR (CDCl3, 400 MHz): δ 1.58-1.35 (m, 10H), 2.34 (s, 2H), 3.26 (dd, J=6.8, 0.8 Hz, 2H), 5.38 (t, J=6.8 Hz, 1H 7.46-7.26 (m, 5H), 7.63-7.55 (m, 3H), 7.89 (s, 1H), 8.08 (dd, J=8.8, 1.2 Hz, 2H).

Workup

  1. extractionextracted with CH2Cl2
  2. extractionThe organic extract
  3. washwas washed with brine
  4. dry with materialdried over Na2SO4
  5. customAfter removing the solvent under reduced pressure
  6. customthe residue was purified by reverse phase preparative HPLC (acetonitrile-water, 0.1% formic acid)

Sources & evidence

ORD record
ord-337e91ab69c948ebbaad4e3ea3058b85
Source dataset
uspto-grants-2005_12
Patent number
US06972341B2

Reaction notes

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