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Methyl (+/-)-4-[alpha-hydroxy-5-(1-imidazolyl)-2-methylbenzyl]-3,5-dimethylbenzoate → HCID 69548778, compound

HRID 1108487
Notes
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Reaction equation

HRID 1108487 reaction equation
[OH:1][CH:2]([C:15]1[C:24]([CH3:25])=[CH:23][C:18]([C:19]([O:21][CH3:22])=[O:20])=[CH:17][C:16]=1[CH3:26])[C:3]1[CH:8]=[C:7]([N:9]2[CH:13]=[CH:12][N:11]=[CH:10]2)[CH:6]=[CH:5][C:4]=1[CH3:14].[Cl:27][C:28]1[CH:33]=[CH:32][C:31]([S:34]([NH:37][C@@H:38]([CH3:42])[C:39](Cl)=[O:40])(=[O:36])=[O:35])=[CH:30][CH:29]=1>ClC(Cl)C.N1C=CC=CC=1>[N:9]1([C:7]2[CH:6]=[CH:5][C:4]([CH3:14])=[C:3]([CH:8]=2)[CH:2]([C:15]2[C:16]([CH3:26])=[CH:17][C:18]([C:19]([O:21][CH3:22])=[O:20])=[CH:23][C:24]=2[CH3:25])[O:1][C:39](=[O:40])[C@@H:38]([NH:37][S:34]([C:31]2[CH:32]=[CH:33][C:28]([Cl:27])=[CH:29][CH:30]=2)(=[O:36])=[O:35])[CH3:42])[CH:13]=[CH:12][N:11]=[CH:10]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 10882640Methyl (+/-)-4-[alpha-hydroxy-5-(1-imidazolyl)-2-methylbenzyl]-3,5-dimethylbenzoateHCID 42259206HCID 42259206, compound

Product 1

HCID 69548778HCID 69548778, compoundYield 100.3%

Reagents, catalysts & solvents 2

HCID 1049PyridineSolventHCID 63651,1-Dichloroethane
Solvent
2×

Procedure

Methyl (±)-4-[α-hydroxy-5-(1-imidazolyl)-2-methylbenzyl]-3,5-dimethylbenzoate (9.2 g) was suspended in dichloroethane (110 ml) and pyridine (3.15 ml), and a solution of (S)-2-(4-chlorobenzenesulfonylamino)propionyl chloride (8.9 g) in dichloroethane (25 ml) was added dropwise over 5 minutes with siring under ice-cooling. The mixture was sired at room temperature for 3 hours and the reaction mixture was washed successively with water, 5% citric acid, 5% potassium carbonate and water. The organic layer was separated and dried over magnesium sulfate. The solvent was evaporated under reduced pressure to give 15.7 g of methyl (±)-4-[5-(1-imidazolyl)-α-{(S)-2-(4-chlorobenzenesulfonylamino)propionyloxy}-2-methylbenzyl]-3,5-dimethylbenzoate as a pale-yellow oil. This was crystallized from ethyl acetate (27 ml) and isopropyl ether (108 ml) and the obtained crystals were recrystallized from ethyl acetate (15 ml) and isopropyl ether (30 ml) to give 5.2 g of methyl (S)-4-[5-(1-imidazolyl)-α-{(S)-2-(4-chlorobenzenesulfonylamino)propionyloxy}-2-methylbenzyl]-3,5-dimethylbenzoate as white crystals, melting point 126-128° C.

Workup

  1. temperaturecooling
  2. washthe reaction mixture was washed successively with water, 5% citric acid, 5% potassium carbonate and water
  3. customThe organic layer was separated
  4. dry with materialdried over magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure

Sources & evidence

ORD record
ord-bf71fc9f24f443188aaefc70702fe0a0
Source dataset
uspto-grants-2000_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06066739

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes