Ethyl Acetate → HCID 18464469, compound

HRID 2230526Notes

Reaction equation

HRID 2230526 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:28]=[C:29]([O:33][CH3:34])[C:30]=1[O:31][CH3:32])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)([CH2:13][CH2:14]OS(C)(=O)=O)[CH2:9]1)=[O:7].[CH2:35]([O:37][CH2:38][CH2:39][N:40]1[C:44]2[CH:45]=[CH:46][CH:47]=[CH:48][C:43]=2[N:42]=[C:41]1[N:49]1[CH2:55][CH2:54][CH2:53][NH:52][CH2:51][CH2:50]1)[CH3:36].C(N(CC)C(C)C)(C)C.C(OCC)(=O)C>C(#N)C.ClCCl.CO.C(OCC)(=O)C>[CH3:34][O:33][C:29]1[CH:28]=[C:5]([CH:4]=[C:3]([O:2][CH3:1])[C:30]=1[O:31][CH3:32])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([CH2:13][CH2:14][N:52]2[CH2:53][CH2:54][CH2:55][N:49]([C:41]3[N:40]([CH2:39][CH2:38][O:37][CH2:35][CH3:36])[C:44]4[CH:45]=[CH:46][CH:47]=[CH:48][C:43]=4[N:42]=3)[CH2:50][CH2:51]2)([C:20]2[CH:21]=[CH:22][C:23]([O:26][CH3:27])=[CH:24][CH:25]=2)[CH2:9]1)=[O:7]

Participants

8

Reactant 4

HCID 8857Ethyl AcetateHCID 81531DiisopropylethylamineHCID 9984168Emedastine EP Impurity EHCID 18465094HCID 18465094, compound

Product 1

HCID 18464469HCID 18464469, compound

Reagents, catalysts & solvents 3

HCID 6342AcetonitrileSolventHCID 6344DichloromethaneSolventHCID 21584119Ethylacetate methanolSolvent

Procedure

Combine 1-(3,4,5-trimethoxybenzoyl)-3-(4-methoxyphenyl)-3-(2-methanesulfonyloxyethyl)pyrrolidine (0.94 g, 1.90 mmol), 4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepane (0.52 g, 1.80 mmol), and N,N-diisopropylethylamine (0.7 mL, 4.0 mmol) in acetonitrile (30 mL). Heat to reflux. After 18 hours, cool and dilute the reaction mixture ethyl acetate (300 mL). Extract three times with an aqueous 1% sodium bicarbonate solution, and then brine. Dry the organic layer over Na2SO4, filter, and concentrate in vacuo to obtain a residue. Chromatograph the residue on silica gel eluting with 25% methanol/ethyl acetate containing concentrated ammonium hydroxide (20 mL/3L). Evaporate the product containing fractions in vacuo to give a residue. Dissolve the residue in dichloromethane, filter, and evaporate in vacuo to give a the title compound: Rf=0.20 (silica gel, 20% methanol/ethyl acetate).

Workup

  1. temperatureHeat to reflux
  2. temperaturecool
  3. extractionExtract three times with an aqueous 1% sodium bicarbonate solution
  4. dry with materialDry the organic layer over Na2SO4
  5. filtrationfilter
  6. concentrationconcentrate in vacuo
  7. customto obtain a residue
  8. customEvaporate the product
  9. additioncontaining fractions in vacuo
  10. customto give a residue
  11. filtrationfilter
  12. customevaporate in vacuo

Sources & evidence

ORD record
ord-35aa137b874c42a0b005b5896ee83d60
Source dataset
uspto-grants-2002_07
Patent number
US06423704B1

Reaction notes

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