1,4-Dioxane → [1-[2-[3-(3,4-Dichlorophenyl)-1-(3,4,5-trimethoxybenzoyl)pyrrolidin-3-yl]ethyl]piperidin-4-yl]-[1-[(4-fluorophenyl)methyl]benzimidazol-2-yl]methanone

HRID 2269844Notes

Reaction equation

HRID 2269844 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:27]=[C:28]([O:32][CH3:33])[C:29]=1[O:30][CH3:31])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[C:21]([Cl:26])[CH:20]=2)([CH2:13][CH2:14]S(C)(=O)=O)[CH2:9]1)=[O:7].C(N(C(C)C)CC)(C)C.[F:43][C:44]1[CH:67]=[CH:66][C:47]([CH2:48][N:49]2[C:53]3[CH:54]=[CH:55][CH:56]=[CH:57][C:52]=3[N:51]=[C:50]2[C:58]([CH:60]2[CH2:65][CH2:64][NH:63][CH2:62][CH2:61]2)=[O:59])=[CH:46][CH:45]=1.O1CCOCC1>CO.C(OCC)(=O)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:27]=[C:28]([O:32][CH3:33])[C:29]=1[O:30][CH3:31])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([CH2:13][CH2:14][N:63]2[CH2:64][CH2:65][CH:60]([C:58]([C:50]3[N:49]([CH2:48][C:47]4[CH:46]=[CH:45][C:44]([F:43])=[CH:67][CH:66]=4)[C:53]4[CH:54]=[CH:55][CH:56]=[CH:57][C:52]=4[N:51]=3)=[O:59])[CH2:61][CH2:62]2)([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[C:21]([Cl:26])[CH:20]=2)[CH2:9]1)=[O:7]

Participants

6

Reactant 4

HCID 312751,4-DioxaneHCID 81531DiisopropylethylamineHCID 155428834-(1-(4-fluorobenzyl)-1H-benzimidazole-2-carbonyl)piperidineHCID 155428861-(3,4,5-Trimethoxy-benzoyl)-3-(3,4-dichloro-phenyl)-3-(2-methanesulfonyl-ethyl)-pyrrolidine

Product 1

HCID 10190770[1-[2-[3-(3,4-Dichlorophenyl)-1-(3,4,5-trimethoxybenzoyl)pyrrolidin-3-yl]ethyl]piperidin-4-yl]-[1-[(4-fluorophenyl)methyl]benzimidazol-2-yl]methanone

Reagents, catalysts & solvents 1

HCID 21584119Ethylacetate methanolSolvent

Procedure

Combine 1-(3,4,5-trimethoxy-benzoyl)-3-(3,4-dichloro-phenyl)-3-(2-methanesulfonyl-ethyl)-pyrrolidine (0.50 g, 0.94 mmol), diisopropylethylamine (0.24 g, 1.9 mmol), 4-[1-(4-fluoro-benzyl)-1 H-benzoimidazole-2-carbonyl]-piperidine (0.47 g, 1.91 mmol), and dioxane (7 mL). Heat to reflux. After 14 hours, cool and partition the reaction mixture between ethyl acetate and water. Extract the organic layer with a saturated sodium bicarbonate solution and a saturated sodium chloride solution. Dry the organic layer over Na2SO4, filter, and concentrate in vacuo to obtain a residue. Chromatograph the residue on silica gel eluting with 12% methanol/ethyl acetate containing 0.1% a concentrated aqueous ammonia solution to give the title compound: Rf=0.35 (silica gel, 12% methanol/ethyl acetate containing 0.1% concentrated aqueous ammonia solution).

Workup

  1. temperatureHeat to reflux
  2. temperaturecool
  3. custompartition the reaction mixture between ethyl acetate and water
  4. extractionExtract the organic layer with a saturated sodium bicarbonate solution
  5. dry with materialDry the organic layer over Na2SO4
  6. filtrationfilter
  7. concentrationconcentrate in vacuo
  8. customto obtain a residue

Sources & evidence

ORD record
ord-2be267d6ab2b47c4a7048df5b92659b2
Source dataset
uspto-grants-2001_12
Patent number
US06329392B1

Reaction notes

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