Benzyl chloroformate → Ethyl(3-{[(benzyloxy)carbonyl]amino}phenyl)acetate

HRID 887078Notes

Reaction equation

HRID 887078 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH2:8][C:9]([O:11][CH3:12])=[O:10])[CH:5]=[CH:6][CH:7]=1.[CH3:13]CN(C(C)C)C(C)C.Cl[C:23]([O:25][CH2:26][C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)=[O:24]>C(Cl)Cl>[CH2:12]([O:11][C:9](=[O:10])[CH2:8][C:4]1[CH:5]=[CH:6][CH:7]=[C:2]([NH:1][C:23]([O:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)=[O:24])[CH:3]=1)[CH3:13]

Participants

5

Reactant 3

HCID 10387Benzyl chloroformateHCID 81531DiisopropylethylamineHCID 13054266Methyl 3-aminophenylacetate

Product 1

HCID 57907493Ethyl(3-{[(benzyloxy)carbonyl]amino}phenyl)acetate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of methyl (3-aminophenyl)acetate (25 g, 140 mmol) in 250 mL anhydrous DCM was added DIEA (28.5 mL, 155 mmol) and the resulting solution cooled to 0° C. and set under nitrogen atmosphere. To this cooled solution was then added benzyl chloroformate (21.1 mL, 148 mmol) and the resulting mixture stirred overnight allowing to warm to room temperature. The reaction was washed with 1 M HCl, water, and then brine. The organic layer was dried over sodium sulfate, filtered and concentrated under vacuum. No further purification was necessary and the material (44 g, 99%) was used as is for the next step reaction. LC-MS: m/z (ES) 314 (MH)+, 336 (MNa)−.

Workup

  1. temperatureto warm to room temperature
  2. washThe reaction was washed with 1 M HCl, water
  3. dry with materialThe organic layer was dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under vacuum
  6. customNo further purification
  7. customas is for the next step reaction

Sources & evidence

ORD record
ord-682dc709cbd64bdc9d6c374afdc0c993
Source dataset
uspto-grants-2012_08
Patent number
US08247415B2

Reaction notes

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