HCID 54145704, compound → 3-{N-[1-(3,4-dichlorophenyl)ethyl]amino}-2(S)-hydroxy-propyl(cyclohexylmethyl)phosphinic acid hydrochloride

HRID 1492967Notes

Reaction equation

HRID 1492967 reaction equation
C([O:3][P:4]([CH2:13][C@@H:14]([OH:27])[CH2:15][NH:16][CH:17]([C:19]1[CH:24]=[CH:23][C:22]([Cl:25])=[C:21]([Cl:26])[CH:20]=1)[CH3:18])([CH2:6][CH:7]1[CH2:12][CH2:11][CH2:10][CH2:9][CH2:8]1)=[O:5])C>Cl>[ClH:25].[Cl:26][C:21]1[CH:20]=[C:19]([CH:17]([NH:16][CH2:15][C@H:14]([OH:27])[CH2:13][P:4]([CH2:6][CH:7]2[CH2:8][CH2:9][CH2:10][CH2:11][CH2:12]2)(=[O:3])[OH:5])[CH3:18])[CH:24]=[CH:23][C:22]=1[Cl:25]

Participants

3

Reactant 1

HCID 54145704HCID 54145704, compound

Product 1

HCID 677418273-{N-[1-(3,4-dichlorophenyl)ethyl]amino}-2(S)-hydroxy-propyl(cyclohexylmethyl)phosphinic acid hydrochloride

Reagents, catalysts & solvents 1

HCID 313Hydrochloric AcidSolvent

Procedure

A solution of 4.1 g of 3-{N-[1-(3,4-dichlorophenyl)ethyl]amino}-2(S)-hydroxy-propyl(cyclohexylmethyl)phosphinic acid ethyl ester in 30 ml of 5N hydrochloric acid is heated at reflux for 24 hours, during which time two phases are formed. The reaction mixture is cooled to room temperature and the solvent is removed under reduced pressure; the residue is taken up in absolute ethanol and the residual water is distilled off azeotropically. The white solid that remains behind is crystallised from isopropanol, yielding 3-{N-[1-(3,4-dichlorophenyl)ethyl]amino}-2(S)-hydroxy-propyl(cyclohexylmethyl)phosphinic acid hydrochloride having a melting point of 174°-180°.

Workup

  1. temperatureat reflux for 24 hours, during which time two phases
  2. customare formed
  3. customthe solvent is removed under reduced pressure
  4. distillationthe residual water is distilled off azeotropically
  5. customThe white solid that remains behind is crystallised from isopropanol

Sources & evidence

ORD record
ord-5b8a6a5ce0cc42929fdbaeef372f1340
Source dataset
uspto-grants-1994_12
Patent number
US05376684

Reaction notes

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