1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 15098053, compound

HRID 891686Notes

Reaction equation

HRID 891686 reaction equation
[C:1]([O:5][C:6]([NH:8][CH2:9][C:10]([OH:12])=[O:11])=[O:7])([CH3:4])([CH3:3])[CH3:2].[N+:13]([C:16]1[CH:23]=[CH:22][C:19]([CH2:20]O)=[CH:18][CH:17]=1)([O-:15])=[O:14].Cl.C(N=C=NCCCN(C)C)C.CCN=C=NCCCN(C)C>C(Cl)Cl.CN(C)C1C=CN=CC=1>[N+:13]([C:16]1[CH:23]=[CH:22][C:19]([CH2:20][O:11][C:10](=[O:12])[CH2:9][NH:8][C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:7])=[CH:18][CH:17]=1)([O-:15])=[O:14]

Participants

7

Reactant 4

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 692754-Nitrobenzyl alcoholHCID 78288N-(tert-butoxycarbonyl)glycineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride

Product 1

HCID 15098053HCID 15098053, compoundYield 100%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a solution of N-(t-butoxycarbonyl)glycine (1.51 g, 8.62 mmol) in anhydrous methylene chloride (75 ml) were added p-nitrobenzyl alcohol (2.63 ml, 17.2 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (hereinafter referred to as WSC) (3.3 g, 17.2 mmol) and 4-dimethylaminopyridine (106 mg, 0.87 mmol) in an ice bath. The mixture was stirred at room temperature under an atmosphere of nitrogen overnight. After checking the completion of the reaction, the reaction mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate solution. The obtained organic layer was washed with saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using hexane:ethyl acetate (2:1) as the eluant to afford N-(t-butoxycarbonyl)glycine p-nitrobenzyl ester (2.67 g, yield 100%) as white crystals.

Workup

  1. customthe completion of the reaction
  2. customthe reaction mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate solution
  3. washThe obtained organic layer was washed with saturated aqueous sodium chloride solution
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by chromatography on a silica gel column

Sources & evidence

ORD record
ord-a75278cfa10849359fcc2d18aa7b423f
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

Loading…