Hydrochloric Acid → 1-[3-Mercapto-2-(methoxycarbonylmethyl)propanoyl]-L-proline

HRID 2308801Notes

Reaction equation

HRID 2308801 reaction equation
C([S:4][CH2:5][CH:6]([CH2:17][C:18]([O:20][CH3:21])=[O:19])[C:7]([N:9]1[CH2:16][CH2:15][CH2:14][C@H:10]1[C:11]([OH:13])=[O:12])=[O:8])(=O)C.Cl.[Cl-].[Na+]>O.N>[SH:4][CH2:5][CH:6]([CH2:17][C:18]([O:20][CH3:21])=[O:19])[C:7]([N:9]1[CH2:16][CH2:15][CH2:14][C@H:10]1[C:11]([OH:13])=[O:12])=[O:8]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 5234Sodium ChlorideHCID 541123831-[3-(Acetylthio)-2-(methoxycarbonylmethyl)propanoyl]-L-proline

Product 1

HCID 539411441-[3-Mercapto-2-(methoxycarbonylmethyl)propanoyl]-L-proline

Reagents, catalysts & solvents 2

HCID 222AmmoniaSolventHCID 962WaterSolvent

Procedure

2.1 g. of the product from Example 81 is dissolved in a mixture of water (35 ml.) and concentrated ammonia (35 ml.) under a blanket of argon. After 20 minutes, the solution is chilled in an ice bath, made acidic with concentrated hydrochloric acid, saturated with sodium chloride and extracted with ethyl acetate. The organic layer is dried and concentrated to dryness in vacuo to yield 1.1 g. of the named product that is purified by chromatography on silica gel (benzene:acetic acid 75:25) Rf : 0.35 (silica gel-benzene:acetic acid, 75:25).

Workup

  1. temperaturethe solution is chilled in an ice bath
  2. extractionextracted with ethyl acetate
  3. customThe organic layer is dried
  4. concentrationconcentrated to dryness in vacuo
  5. customto yield 1.1 g
  6. customof the named product that is purified by chromatography on silica gel (benzene:acetic acid 75:25) Rf

Sources & evidence

ORD record
ord-b2d5c3185364422eb7af20dd621a986b
Source dataset
uspto-grants-1987_09
Patent number
US04690936

Reaction notes

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