Potassium Carbonate → 3-[4-((E)-2-{4-[5-(4-Chloro-phenyl)-[1,3,4]oxadiazol-2-yl]-2-nitro-phenyl}-vinyl)-3,5-dimethyl-phenyl]-2,2-dimethyl-propionic acid methyl ester

HRID 1360804Notes

Reaction equation

HRID 1360804 reaction equation
Br[CH2:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[O:10][C:11]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)=[N:12][N:13]=2)=[CH:5][C:4]=1[N+:21]([O-:23])=[O:22].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[CH3:43][O:44][C:45](=[O:60])[C:46]([CH3:59])([CH3:58])[CH2:47][C:48]1[CH:53]=[C:52]([CH3:54])[C:51]([CH:55]=O)=[C:50]([CH3:57])[CH:49]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.CCOC(C)=O>[CH3:43][O:44][C:45](=[O:60])[C:46]([CH3:58])([CH3:59])[CH2:47][C:48]1[CH:53]=[C:52]([CH3:54])[C:51](/[CH:55]=[CH:2]/[C:3]2[CH:8]=[CH:7][C:6]([C:9]3[O:10][C:11]([C:14]4[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=4)=[N:12][N:13]=3)=[CH:5][C:4]=2[N+:21]([O-:23])=[O:22])=[C:50]([CH3:57])[CH:49]=1

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 11776TriphenylphosphineHCID 669664172-(4-Bromomethyl-3-nitro-phenyl)-5-(4-chloro-phenyl)-[1,3,4]oxadiazoleHCID 86632822Methyl 3-(4-formyl-3,5-dimethylphenyl)-2,2-dimethylpropanoate2×

Product 1

HCID 669664153-[4-((E)-2-{4-[5-(4-Chloro-phenyl)-[1,3,4]oxadiazol-2-yl]-2-nitro-phenyl}-vinyl)-3,5-dimethyl-phenyl]-2,2-dimethyl-propionic acid methyl ester

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

Combine 2-(4-bromomethyl-3-nitro-phenyl)-5-(4-chloro-phenyl)-[1,3,4]oxadiazole (894 mg, 2.27 mmol) and PPh3 (656 mg, 2.50 mmol) in DMF (13 mL) and heat to 95° C. under N2 for 4.5 h. Add 3-(4-formyl-3,5-dimethyl-phenyl)-2,2-dimethyl-propionic acid methyl ester (intermediate A in Example 1-62, 675 mg, 2.72 mmol) and K2CO3 (627 mg, 4.54 mmol), continue heating at 95° C. for 6.5 h. Allow the reaction to cool to room temperature. Dilute the cooled reaction with EtOAc (150 mL) and extract with water (50 mL). Dry the organic layer over Na2SO4 and evaporate the solvent. Purify the resulting oil by silica gel chromatography (10-45% EtOAc/HEP) to afford a yellow solid: (M+H)+ 546.1.

Workup

  1. customthe reaction
  2. additionDilute
  3. extractionextract with water (50 mL)
  4. dry with materialDry the organic layer over Na2SO4
  5. customevaporate the solvent
  6. customPurify the resulting oil by silica gel chromatography (10-45% EtOAc/HEP)
  7. customto afford a yellow solid

Sources & evidence

ORD record
ord-4b5e979194144037b60bef526258fa0d
Source dataset
uspto-grants-2011_02
Patent number
US07879850B2

Reaction notes

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