Diisopropylethylamine → 1-(3,4,5-Trimethoxybenzoyl)-3-(2-(4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepan-1-yl)ethyl)-3-phenylpyrrolidine

HRID 2230518Notes

Reaction equation

HRID 2230518 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:26]=[C:27]([O:31][CH3:32])[C:28]=1[O:29][CH3:30])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)([CH2:13][CH2:14]OS(C)(=O)=O)[CH2:9]1)=[O:7].I.[CH2:34]([O:36][CH2:37][CH2:38][N:39]1[C:43]2[CH:44]=[CH:45][CH:46]=[CH:47][C:42]=2[N:41]=[C:40]1[N:48]1[CH2:54][CH2:53][CH2:52][NH:51][CH2:50][CH2:49]1)[CH3:35].C(N(CC)C(C)C)(C)C.CO.ClCCl>C(#N)C.C(OCC)(=O)C.ClCCl>[CH3:32][O:31][C:27]1[CH:26]=[C:5]([CH:4]=[C:3]([O:2][CH3:1])[C:28]=1[O:29][CH3:30])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([CH2:13][CH2:14][N:51]2[CH2:52][CH2:53][CH2:54][N:48]([C:40]3[N:39]([CH2:38][CH2:37][O:36][CH2:34][CH3:35])[C:43]4[CH:44]=[CH:45][CH:46]=[CH:47][C:42]=4[N:41]=3)[CH2:49][CH2:50]2)([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[CH2:9]1)=[O:7]

Participants

8

Reactant 4

HCID 81531DiisopropylethylamineHCID 184646303,4,5-Trimethoxybenzoyl-3-phenyl-3-(2-methanesulfonyloxyethyl)pyrrolidineHCID 21226129Dichloromethane methanolHCID 865838874-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl) [1,4]diazepane hydriodic acid salt

Product 1

HCID 184644711-(3,4,5-Trimethoxybenzoyl)-3-(2-(4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepan-1-yl)ethyl)-3-phenylpyrrolidine

Reagents, catalysts & solvents 3

HCID 6342AcetonitrileSolventHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

Combine 1-(3,4,5-trimethoxybenzoyl)-3-phenyl-3-(2-methanesulfonyloxyethyl)pyrrolidine (prepared from (−)-3-phenyl-3-(2-hydroxyethyl)pyrrolidine (R,R)-di-p-anisoyltartaric acid salt)(5.5 g, 11.9 mmol), 4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl) [1,4]diazepane hydriodic acid salt (7.0 g, 12.9 mmol), and N,N-diisopropylethylamine (9.0 mL, 51.4 mmol) in acetonitrile (100 mL). Heat to reflux. After 18 hours, cool to ambient temperature and dilute the reaction mixture with ethyl acetate (400 mL). Extract with a saturated aqueous sodium bicarbonate solution and then with brine. Dry the organic layer over Na2SO4, filter,, and evaporate in vacuo to give a residue. Chromatograph the residue on silica gel eluting with 25% methanol/dichloromethane containing aqueous concentrated ammonia (20 mL/3 L). Combine the product containing fractions to give a residue. Dissolve the residue in dichloromethane and filter. Evaporate the filtrate in vacuo to give the title compound: mp; 43-48° C.

Workup

  1. temperatureHeat to reflux
  2. extractionExtract with a saturated aqueous sodium bicarbonate solution
  3. dry with materialDry the organic layer over Na2SO4
  4. filtrationfilter
  5. customevaporate in vacuo
  6. customto give a residue
  7. additionCombine the product containing fractions
  8. customto give a residue
  9. filtrationfilter
  10. customEvaporate the filtrate in vacuo

Sources & evidence

ORD record
ord-71da190ce5cf4034b17a14885b9de16d
Source dataset
uspto-grants-2002_07
Patent number
US06423704B1

Reaction notes

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