Benzyl chloroformate → Benzyl N-(4-aminobutyl)carbamate

HRID 1599698Notes

Reaction equation

HRID 1599698 reaction equation
[NH2:1][CH2:2][CH2:3][CH2:4][CH:5]([NH2:7])C.[OH-].[Na+].[C:10](Cl)([O:12][CH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)=[O:11]>CN(C=O)C.[H][H]>[NH2:7][CH2:5][CH2:4][CH2:3][CH2:2][NH:1][C:10](=[O:11])[O:12][CH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1

Participants

5

Reactant 3

HCID 10387Benzyl chloroformateHCID 14798Sodium HydroxideHCID 5508801,4-DIAMINOPENTANE

Product 1

HCID 2783677Benzyl N-(4-aminobutyl)carbamateYield 30%

Reagents, catalysts & solvents 1

HCID 178484659HCID 178484659, compoundSolvent

Procedure

To a solution of 1,4-diaminopentane (25 g, 155 mmol) in 100 mL DMF/H2 O (1:1) was added 5N NaOH to adjust the pH to 9. CBZ-Cl (3.7 mL, 26 mmol) was added as one portion and stirred at room temperature for 16 hrs. The reaction was acidified to pH 1.25 and washed with diethyl ether. The pH of the reaction was then adjusted to 9.5 and the reaction extracted with EtOAc. The organic layer was washed with H2O, brine, dried over Na2SO4 and evaporated to give title compound (1.57 g, 30%).

Workup

  1. washwashed with diethyl ether
  2. extractionthe reaction extracted with EtOAc
  3. washThe organic layer was washed with H2O, brine
  4. dry with materialdried over Na2SO4
  5. customevaporated

Sources & evidence

ORD record
ord-ed87b9a7fc9e45b2b9626cd00b2731e3
Source dataset
uspto-grants-1998_04
Patent number
US05741792

Reaction notes

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