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 1370629Notes

Reaction equation

HRID 1370629 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-6e53e4d4f2884fe5936dcf0fd22debf0
Source dataset
uspto-grants-2003_06
Patent number
US06583164B1

Reaction notes

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