tert-Butyl carbazate → HCID 67067040, compound

HRID 599606Notes

Reaction equation

HRID 599606 reaction equation
[C:1]1([C@H:7]([CH3:11])[C:8]([OH:10])=O)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:12]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])(=[O:15])[NH:13][NH2:14].C1C=CC2N(O)N=NC=2C=1.C(=O)(O)[O-].[Na+]>CN(C=O)C.C(OCC)(=O)C.C(Cl)CCl>[C:1]1([C@H:7]([CH3:11])[C:8]([NH:14][NH:13][C:12]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])=[O:10])[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1

Participants

8

Reactant 4

HCID 70091tert-Butyl carbazateHCID 757711-HydroxybenzotriazoleHCID 516892Sodium BicarbonateHCID 27246222-Phenylpropionic acid, (+)-

Product 1

HCID 67067040HCID 67067040, compoundYield 54.8%

Reagents, catalysts & solvents 3

HCID 111,2-DichloroethaneSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

EDC (734 mg) was added to a solution of (S)-(+)-2-phenylpropionic acid (CAS #7782-24-3, 500 mg), tert-butyl carbazate (CAS #870-46-2, 440 mg) and HOBT (517 mg) in DMF (7.5 ml), and the reaction solution was stirred at room temperature for eight hours. Ethyl acetate and a sodium bicarbonate solution were added to the reaction solution, and the organic layer was separated. The organic layer was washed with water and brine, dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. Ethyl acetate and heptane were added to the resulting residue, and the precipitated solid was collected by filtration to obtain 482 mg of the title compound. The property values of the compound are as follows.

Workup

  1. customthe organic layer was separated
  2. washThe organic layer was washed with water and brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. additionEthyl acetate and heptane were added to the resulting residue
  6. filtrationthe precipitated solid was collected by filtration

Sources & evidence

ORD record
ord-fa8697f879c34ebf92619bfc53357129
Source dataset
uspto-grants-2011_03
Patent number
US07897632B2

Reaction notes

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