Acetonitrile → 1-[(2R,3R)-2-(2,4-difluorophenyl)-2-hydroxy-3-[2-oxo-3-[4-(1H-tetrazol-1-yl)phenyl]-1-imidazolidinyl]butyl]-4-(isopropoxycarbonyloxy)methyl-1H-1,2,4-triazolium chloride

HRID 2186923Notes

Reaction equation

HRID 2186923 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[C@@:9]([OH:35])([CH2:29][N:30]1[CH:34]=[N:33][CH:32]=[N:31]1)[C@H:10]([N:12]1[CH2:16][CH2:15][N:14]([C:17]2[CH:22]=[CH:21][C:20]([N:23]3[CH:27]=[N:26][N:25]=[N:24]3)=[CH:19][CH:18]=2)[C:13]1=[O:28])[CH3:11].[C:36](=[O:44])([O:40][CH:41]([CH3:43])[CH3:42])[O:37][CH2:38][Cl:39].C(#N)C>C(OC(C)C)(C)C>[Cl-:39].[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[C@:9]([OH:35])([C@H:10]([N:12]1[CH2:16][CH2:15][N:14]([C:17]2[CH:22]=[CH:21][C:20]([N:23]3[CH:27]=[N:26][N:25]=[N:24]3)=[CH:19][CH:18]=2)[C:13]1=[O:28])[CH3:11])[CH2:29][NH+:30]1[CH2:34][N:33]([CH2:38][O:37][C:36]([O:40][CH:41]([CH3:43])[CH3:42])=[O:44])[CH:32]=[N:31]1

Participants

5

Reactant 3

HCID 6342AcetonitrileHCID 3002973181869-54-5HCID 14787051Chloromethyl isopropyl carbonate

Product 1

HCID 700167551-[(2R,3R)-2-(2,4-difluorophenyl)-2-hydroxy-3-[2-oxo-3-[4-(1H-tetrazol-1-yl)phenyl]-1-imidazolidinyl]butyl]-4-(isopropoxycarbonyloxy)methyl-1H-1,2,4-triazolium chlorideYield 16.7%

Reagents, catalysts & solvents 1

HCID 7914Diisopropyl EtherSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 1-[(1R,2R)-2-(2,4-difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]-3-[4-(1H-tetrazol-1-yl)phenyl]-2-imidazolidinone (0.5 g), chloromethyl isopropyl carbonate (3.17 g) and acetonitrile (1 ml) was stirred for 6 hours at 100° C. After having been cooled, the mixture was diluted with diisopropyl ether (10 ml). The resulting powder was collected by filtration. The powder was subjected to silica gel chromatography (eluent: ethyl acetate→acetone→acetone/ethanol=10/1→acetone/ethanol=5/1). The solvent was distilled off, and the residue was crystallized from ethanol/acetone to give 1-[(2R,3R)-2-(2,4-difluorophenyl)-2-hydroxy-3-[2-oxo-3-[4-(1H-tetrazol-1-yl)phenyl]-1-imidazolidinyl]butyl]-4-(isopropoxycarbonyloxy)methyl-1H-1,2,4-triazolium chloride (Compound 18, 110 mg) as white powdery crystals.

Workup

  1. temperatureAfter having been cooled
  2. filtrationThe resulting powder was collected by filtration
  3. distillationThe solvent was distilled off
  4. customthe residue was crystallized from ethanol/acetone

Sources & evidence

ORD record
ord-8068481c553e4882950abaf8bf9d5985
Source dataset
uspto-grants-2002_06
Patent number
US06407129B1

Reaction notes

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