4-(Benzyl-tert-butoxycarbonylmethyl-amino)-cyclohexanecarboxylic acid tert-butyl ester → 4-(Tert-butoxycarbonylmethyl-amino)-cyclohexanecarboxylic acid tert-butyl ester

HRID 444714Notes

Reaction equation

HRID 444714 reaction equation
[C:1]([O:5][C:6]([CH:8]1[CH2:13][CH2:12][CH:11]([N:14](CC2C=CC=CC=2)[CH2:15][C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H][H]>CCO.[Pd]>[C:1]([O:5][C:6]([CH:8]1[CH2:9][CH2:10][CH:11]([NH:14][CH2:15][C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:12][CH2:13]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 2

HCID 687254864-(Benzyl-tert-butoxycarbonylmethyl-amino)-cyclohexanecarboxylic acid tert-butyl esterHCID 178418361HCID 178418361, compound

Product 1

HCID 687250694-(Tert-butoxycarbonylmethyl-amino)-cyclohexanecarboxylic acid tert-butyl esterYield 104.3%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 702EthanolSolvent

Procedure

To a solution of 4-(benzyl-tert-butoxycarbonylmethyl-amino)-cyclohexanecarboxylic acid tert-butyl ester (300 mg, 0.7433 mmol) in EtOH (10 mL) is added 10% Pd/C (wet) (40 mg). The mixture stirs under a blanket of hydrogen gas at atmospheric pressure for 12 h. The mixture is then filtered though celite. The celite is washed with MeOH (50 mL). The filtrated is concentrated to afford 243 mg of 4-(tert-butoxycarbonylmethyl-amino)-cyclohexanecarboxylic acid tert-butyl ester. 1H NMR (400 MHz, DMSO-D6) δ ppm 0.98 (m, 2 H), 1.25 (m, 2 H), 1.36 (m, 9 H), 1.41 (m, 9 H), 1.81 (m, 4 H), 2.05 (m, 1 H), 2.28 (m, 1 H), 3.20 (m, 2 H).

Workup

  1. filtrationThe mixture is then filtered though celite
  2. washThe celite is washed with MeOH (50 mL)
  3. concentrationThe filtrated is concentrated

Sources & evidence

ORD record
ord-ae557da7caa346739d798a333f907c09
Source dataset
uspto-grants-2013_07
Patent number
US08476224B2

Reaction notes

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