Hydrochloric Acid → 2-(4-(2-Mercapto-3-phenyl-propionyl-amino)-3-oxo-1,3,4,5-tetrahydro-benzo[c]azepin-2-yl)-4-methyl-valeric acid

HRID 2717Notes

Reaction equation

HRID 2717 reaction equation
C([S:9][CH:10]([CH2:34][C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1)[C:11]([NH:13][CH:14]1[C:20](=[O:21])[N:19]([CH:22]([CH2:26][CH:27]([CH3:29])[CH3:28])[C:23]([OH:25])=[O:24])[CH2:18][C:17]2[CH:30]=[CH:31][CH:32]=[CH:33][C:16]=2[CH2:15]1)=[O:12])(=O)C1C=CC=CC=1.Cl>CO>[SH:9][CH:10]([CH2:34][C:35]1[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=1)[C:11]([NH:13][CH:14]1[C:20](=[O:21])[N:19]([CH:22]([CH2:26][CH:27]([CH3:29])[CH3:28])[C:23]([OH:25])=[O:24])[CH2:18][C:17]2[CH:30]=[CH:31][CH:32]=[CH:33][C:16]=2[CH2:15]1)=[O:12]

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 186125262-(4-(2-Benzoylsulfanyl-3-phenyl-propionyl-amino)-3-oxo-1,3,4,5-tetrahydro-benzo[c]azepin-2-yl)-4-methyl-valeric acid

Product 1

HCID 186125182-(4-(2-Mercapto-3-phenyl-propionyl-amino)-3-oxo-1,3,4,5-tetrahydro-benzo[c]azepin-2-yl)-4-methyl-valeric acidYield 80.8%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Dissolve 2-[4-(2-benzoylsulfanyl-3-phenyl-propionyl-amino)-3-oxo-1,3,4,5-tetrahydro-benzo[c]azepin-2-yl]-4-methyl-valeric acid (0.229 mmol) in degassed methanol (3 mL) and cool in an ice bath. Treat with degassed 1N aqueous lithium hydroxide (1.0 mL) and stir, allowing the ice bath to warm gradually over 3 hours. With the reaction at 0° C., acidify with 5% hydrochloric acid. Partition between methylene chloride (75 mL) and water (25 mL), dry (Na2SO4) and purify by silica gel chromatography (3:1:0.01 hexane/ethyl acetate/acetic acid followed by 1:1:0.01 hexane/ethyl acetate/acetic acid to give the title compound as a white solid (84 mg, 80.8%).

Workup

  1. temperaturecool in an ice bath
  2. additionTreat
  3. customwith degassed 1N aqueous lithium hydroxide (1.0 mL)
  4. temperatureto warm gradually over 3 hours
  5. customWith the reaction at 0° C.
  6. customPartition between methylene chloride (75 mL) and water (25 mL)
  7. dry with materialdry (Na2SO4)
  8. custompurify by silica gel chromatography (3:1:0.01 hexane/ethyl acetate/acetic acid

Sources & evidence

ORD record
ord-3307e69c593d48d58dc8fbd52835b144
Source dataset
uspto-grants-1998_03
Patent number
US05731306

Reaction notes

Loading…