Salicylic Acid → Tert-butyl 2-(2-(2-hydroxybenzamido)ethoxy)ethylcarbamate

HRID 1844651Notes

Reaction equation

HRID 1844651 reaction equation
[NH2:1][CH2:2][CH2:3][O:4][CH2:5][CH2:6][NH:7][C:8](=[O:14])[O:9][C:10]([CH3:13])([CH3:12])[CH3:11].[C:15](O)(=[O:23])[C:16]1[C:17](=[CH:19][CH:20]=[CH:21][CH:22]=1)[OH:18].CCN=C=NCCCN(C)C>C(Cl)Cl>[OH:18][C:17]1[CH:19]=[CH:20][CH:21]=[CH:22][C:16]=1[C:15]([NH:1][CH2:2][CH2:3][O:4][CH2:5][CH2:6][NH:7][C:8](=[O:14])[O:9][C:10]([CH3:11])([CH3:13])[CH3:12])=[O:23]

Participants

5

Reactant 3

HCID 338Salicylic AcidHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 12106198tert-Butyl [2-(2-aminoethoxy)ethyl]carbamate

Product 1

HCID 67085428Tert-butyl 2-(2-(2-hydroxybenzamido)ethoxy)ethylcarbamateYield 33%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

tert-Butyl 2-(2-aminoethoxy)ethylcarbamate was then taken up in CH2Cl2 (20 mL) along with salicylic acid (576 mg, 4.17 mmol) and EDCI (905 mg. 4.72 mmol). The resulting reaction mixture was stirred at room temperature for 18 h. It was then diluted with CH2Cl2 (20 mL), washed with saturated aqueous NaHCO3, brine, dried over Na2SO4 and concentrated under reduced pressure. The resulting residue was purified by chromatography (9:1 CH2Cl2/MeOH) to afford tert-butyl 2-(2-(2-hydroxybenzamido)ethoxy)ethylcarbamate (450 mg, 33%). Mass calculated for C16H24N2O5: 324.17. found: [M+H]+=325.

Workup

  1. customThe resulting reaction mixture
  2. washwashed with saturated aqueous NaHCO3, brine
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue was purified by chromatography (9:1 CH2Cl2/MeOH)

Sources & evidence

ORD record
ord-51b41c43b4e2448881470a8ec000e2a6
Source dataset
uspto-grants-2015_02
Patent number
US08946451B2

Reaction notes

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