Triethylamine → HCID 28165828, compound

HRID 1627110Notes

Reaction equation

HRID 1627110 reaction equation
[C:1]([O:5][C:6]([NH:8][C@H:9]([CH2:13][CH:14]([CH3:16])[CH3:15])[C:10]([OH:12])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].CN(C(ON1N=NC2[CH:28]=[CH:29][CH:30]=[N:31][C:26]1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.N1CCCC1.CCN(CC)CC>C(Cl)Cl>[CH3:15][CH:14]([CH3:16])[CH2:13][C@@H:9]([NH:8][C:6](=[O:7])[O:5][C:1]([CH3:2])([CH3:3])[CH3:4])[C:10](=[O:12])[N:31]1[CH2:30][CH2:29][CH2:28][CH2:26]1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 31268PyrrolidineHCID 637604tert-Butoxycarbonyl-D-leucineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)

Product 1

HCID 28165828HCID 28165828, compoundYield 95.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a mixture of (R)-2-(tert-butoxycarbonylamino)-4-methylpentanoic acid (1.0 g, 4.32 mmol), HATU (1.97 g, 5.19 mmol) and pyrrolidine (0.76 mL, 8.65 mmol) in DCM (30 mL) was added Et3N (1.2 mL, 8.65 mmol). The reaction mixture was stirred at room temperature for 5 h and then washed with saturated aqueous NaHCO3 and brine. The organics were dried over MgSO4 and concentrated. Purification by silica column chromatography (MeOH/DCM, 0-10%) afforded the title compound as a light yellow oil (1.17 g, 95%).

Workup

  1. washwashed with saturated aqueous NaHCO3 and brine
  2. dry with materialThe organics were dried over MgSO4
  3. concentrationconcentrated
  4. customPurification by silica column chromatography (MeOH/DCM, 0-10%)

Sources & evidence

ORD record
ord-92f9f0158f2b46c0810d75f75d1c55db
Source dataset
uspto-grants-2014_07
Patent number
US08785429B2

Reaction notes

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