Hydrochloric Acid → HCID 53986628, compound

HRID 1599705Notes

Reaction equation

HRID 1599705 reaction equation
[C:1]([NH:8][CH2:9][C:10]([OH:12])=O)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].[CH3:13][O:14][C:15](=[O:21])[C@@H:16]1[CH2:20][CH2:19][CH2:18][NH:17]1.Cl.O.ON1C2C=CC=CC=2N=N1.CN1CCOCC1>CN(C=O)C.O>[CH3:13][O:14][C:15](=[O:21])[C@@H:16]1[CH2:20][CH2:19][CH2:18][N:17]1[C:10](=[O:12])[CH2:9][NH:8][C:1]([O:3][C:4]([CH3:5])([CH3:6])[CH3:7])=[O:2]

Participants

8

Reactant 5

HCID 313Hydrochloric Acid2×HCID 79724-MethylmorpholineHCID 78288N-(tert-butoxycarbonyl)glycineHCID 853477Methyl L-prolinateHCID 27960291-Hydroxybenzotriazole hydrate

Product 1

HCID 53986628HCID 53986628, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of N-BOC-glycine (150 mmol) in DMF (250 mL) at 0° C., is added proline methyl ester.HCl (150 mmol), 1-hydroxybenzotriazole hydrate (22.2 g, 0,164 mmol), ethyl-3-(3-dimethylamino)propyl carbodiimide.HCl (31.4 g, 0,164 mmol) and 4-methylmorpholine (22.6 g, 0.224 mmol). The reaction mixture is stirred for 12 h while allowing the reaction to warm to room temperature. The reaction mixture is poured in water (750 mL) and extracted with ethyl acetate (2×150 mL). The combined organic extracts are washed as follows: KHSO4 (0.25 M, 2×50 mL), water (1×50 mL), saturated aqueous NaHCO3 (2×50 mL) and saturated NaCl (1×50 mL). The organic layer is dried over MgSO4, filtered and the solvent removed in vacuo to give title compound.

Workup

  1. customthe reaction
  2. extractionextracted with ethyl acetate (2×150 mL)
  3. washThe combined organic extracts are washed
  4. dry with materialThe organic layer is dried over MgSO4
  5. filtrationfiltered
  6. customthe solvent removed in vacuo

Sources & evidence

ORD record
ord-0739ea03664d44ecbdd610b70452dafa
Source dataset
uspto-grants-1998_04
Patent number
US05741792

Reaction notes

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