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

HRID 637065Notes

Reaction equation

HRID 637065 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:21]=[N:22][CH:23]=[CH:24][CH:25]=2)([CH2:13][CH2:14]OS(C)(=O)=O)[CH2:9]1)=[O:7].[CH2:33]([O:35][CH2:36][CH2:37][N:38]1[C:42]2[CH:43]=[CH:44][CH:45]=[CH:46][C:41]=2[N:40]=[C:39]1[N:47]1[CH2:53][CH2:52][CH2:51][NH:50][CH2:49][CH2:48]1)[CH3:34].C(N(CC)C(C)C)(C)C.CO.C(OCC)(=O)C>C(#N)C>[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:50]2[CH2:51][CH2:52][CH2:53][N:47]([C:39]3[N:38]([CH2:37][CH2:36][O:35][CH2:33][CH3:34])[C:42]4[CH:43]=[CH:44][CH:45]=[CH:46][C:41]=4[N:40]=3)[CH2:48][CH2:49]2)([C:20]2[CH:21]=[N:22][CH:23]=[CH:24][CH:25]=2)[CH2:9]1)=[O:7]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 9984168Emedastine EP Impurity EHCID 184647061-(3,4,5-Trimethoxybenzoyl)-3-(pyrid-3-yl)-3-(2-methanesulfonyloxyethyl)pyrrolidineHCID 21584119Ethylacetate methanol

Product 1

HCID 184646291-(3,4,5-Trimethoxybenzoyl)-3-(2-(4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepan-1-yl)ethyl)-3-(pyrid-3-yl)pyrrolidine

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

Combine 1-(3,4,5-trimethoxybenzoyl)-3-(pyrid-3-yl)-3-(2-methanesulfonyloxyethyl)pyrrolidine (0.54 g, 1.16 mmol), 4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepane (0.95 g, 1.74 mmol), and N,N-diisopropylethylamine (0.81 mL, 4.64 mmol) in acetonitrile (16 mL). Heat to reflux. After 24 hour, evaporate in vacuo, dilute with dichloromethane, and extract 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 6/1/0.5 methanol/ethyl acetate/concentrated aqueous ammonia to give the title compound: Rf=0.27 (silica gel, 6/1/0.5 methanol/ethyl acetate/concentrated aqueous ammonia).

Workup

  1. temperatureHeat to reflux
  2. customevaporate in vacuo
  3. additiondilute with dichloromethane
  4. extractionextract with brine
  5. dry with materialDry the organic layer over Na2SO4
  6. filtrationfilter
  7. customevaporate in vacuo
  8. customto give a residue

Sources & evidence

ORD record
ord-ee8accb885a044a180b272ff93c92dcb
Source dataset
uspto-grants-2001_02
Patent number
US06194406B1

Reaction notes

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