Water → Methyl 4-(1-hydroxy-1-methylethyl)-2-methoxymethyl-1-{4-[2-(trityltetrazol-5-yl)phenyl]phenyl}methylimidazole-5-carboxylate

HRID 265128Notes

Reaction equation

HRID 265128 reaction equation
CC(C)([O-])C.[K+].[OH:7][C:8]([C:11]1[N:12]=[C:13]([CH2:20][O:21][CH3:22])[NH:14][C:15]=1[C:16]([O:18][CH3:19])=[O:17])([CH3:10])[CH3:9].[C:23]([N:42]1[C:46]([C:47]2[CH:52]=[CH:51][CH:50]=[CH:49][C:48]=2[C:53]2[CH:60]=[CH:59][C:56]([CH2:57]Br)=[CH:55][CH:54]=2)=[N:45][N:44]=[N:43]1)([C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)([C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.O>CN(C)C(=O)C>[OH:7][C:8]([C:11]1[N:12]=[C:13]([CH2:20][O:21][CH3:22])[N:14]([CH2:57][C:56]2[CH:55]=[CH:54][C:53]([C:48]3[CH:49]=[CH:50][CH:51]=[CH:52][C:47]=3[C:46]3[N:42]([C:23]([C:36]4[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=4)([C:30]4[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=4)[C:24]4[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=4)[N:43]=[N:44][N:45]=3)=[CH:60][CH:59]=2)[C:15]=1[C:16]([O:18][CH3:19])=[O:17])([CH3:9])[CH3:10]

Participants

6

Reactant 4

HCID 962WaterHCID 100534615-(4'-(Bromomethyl)(1,1'-biphenyl)-2-yl)-1-trityl-1H-tetraazoleHCID 23665647Potassium tert-butoxideHCID 178494672Methyl 4-(1-hydroxy-1-methylethyl)-2-methoxymethylimidazole-5-carboxylate

Product 1

HCID 19036245Methyl 4-(1-hydroxy-1-methylethyl)-2-methoxymethyl-1-{4-[2-(trityltetrazol-5-yl)phenyl]phenyl}methylimidazole-5-carboxylateYield 76.5%

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent2×

Procedure

194 mg of potassium t-butoxide were added, whilst ice-cooling, to a solution of 359 mg of methyl 4-(1-hydroxy-1-methylethyl)-2-methoxymethylimidazole-5-carboxylate [prepared as described in Preparation 2(v)] in 5 ml of N,N-dimethylacetamide, and the resulting mixture was stirred for 15 minutes. At the end of this time, a solution of 1.32 g of 4-[2-(trityltetrazol-5-yl)phenyl]benzyl bromide in 10 ml of N,N-dimethylacetamide was added. The mixture was first stirred at room temperature for 4 hours and then at 50° C. for a further 2 hours. The reaction mixture was then mixed with water and extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate, and the solvent was removed by distillation under reduced pressure. The resulting residue was purified by column chromatography through silica gel, using a 1:2 by volume mixture of hexane and ethyl acetate as the eluent, to give 848 mg of the title compound as crystals, melting at 120°-137° C. (with decomposition).

Workup

  1. stirringThe mixture was first stirred at room temperature for 4 hours
  2. waitat 50° C. for a further 2 hours
  3. extractionextracted with ethyl acetate
  4. dry with materialThe extract was dried over anhydrous magnesium sulfate
  5. customthe solvent was removed by distillation under reduced pressure
  6. customThe resulting residue was purified by column chromatography through silica gel
  7. additionby volume mixture of hexane and ethyl acetate as the eluent

Sources & evidence

ORD record
ord-f362fd435ab24411929f79350607a1d0
Source dataset
uspto-grants-1997_07
Patent number
US05646171

Reaction notes

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