N-Cbz-d-alanine → HCID 60078292, compound

HRID 1620717Notes

Reaction equation

HRID 1620717 reaction equation
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([C:14]([OH:16])=O)[CH3:13])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CO.[CH3:19][NH:20][CH3:21].C(N(C(C)C)C(C)C)C.F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2N=CC=CC=2N=N1>CN(C=O)C.O>[CH2:1]([O:8][C:9](=[O:10])[NH:11][C@H:12]([CH3:13])[C:14]([N:20]([CH3:21])[CH3:19])=[O:16])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 70832N-Cbz-d-alanineHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 22497844Dimethylamine methanol

Product 1

HCID 60078292HCID 60078292, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of N-[(benzyloxy)carbonyl]-D-alanine (4.46 g), 11% dimethylamine methanol solution (11.0 mL) and N-ethyl-N-(1-methylethyl)propan-2-amine (5.17 g) in DMF (30 mL) was added O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (8.37 g) under ice-cooling. The reaction mixture was stirred at room temperature overnight, the reaction mixture was added to water, and the mixture was extracted with ethyl acetate. The organic layer was separated, washed with water and saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (3.73 g).

Workup

  1. temperaturecooling
  2. extractionthe mixture was extracted with ethyl acetate
  3. customThe organic layer was separated
  4. washwashed with water and saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Sources & evidence

ORD record
ord-73451e57fa4849a78422ded9d394334a
Source dataset
uspto-grants-2014_07
Patent number
US08772277B2

Reaction notes

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