Ethyl Acetate → 4-(1-(5-Hydroxymethylfur-2-ylmethyl)-1H-benzimidazol-2-yl)[1,4]diazepane

HRID 1584438Notes

Reaction equation

HRID 1584438 reaction equation
C(OC([N:6]1[CH2:12][CH2:11][CH2:10][N:9]([C:13]2[N:17]([CH2:18][C:19]3[O:20][C:21]([CH2:24][OH:25])=[CH:22][CH:23]=3)[C:16]3[CH:26]=[CH:27][CH:28]=[CH:29][C:15]=3[N:14]=2)[CH2:8][CH2:7]1)=O)C.[OH-].[Na+].C(OCC)(=O)C>C(O)(C)C>[OH:25][CH2:24][C:21]1[O:20][C:19]([CH2:18][N:17]2[C:16]3[CH:26]=[CH:27][CH:28]=[CH:29][C:15]=3[N:14]=[C:13]2[N:9]2[CH2:10][CH2:11][CH2:12][NH:6][CH2:7][CH2:8]2)=[CH:23][CH:22]=1

Participants

5

Reactant 3

HCID 8857Ethyl AcetateHCID 14798Sodium HydroxideHCID 184645131-ethoxycarbonyl-4-(1-(5-hydroxymethylfur-2-ylmethyl)-1H-benzimidazol-2-yl)[1,4]diazepane

Product 1

HCID 184649364-(1-(5-Hydroxymethylfur-2-ylmethyl)-1H-benzimidazol-2-yl)[1,4]diazepane

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Procedure

Combine 1-ethoxycarbonyl-4-(1-(5-hydroxymethylfur-2-ylmethyl)-1H-benzimidazol-2-yl)[1,4]diazepane (4 mmol) and sodium hydroxide (8 mmol) in isopropanol (20 mL). Heat to reflux. After 2 days, evaporate the reaction mixture in vacuo to give a residue. Combine the residue and ethyl acetate. Extract with water and brine. Dry the organic layer over Na2SO4, filter, and evaporate in vacuo to give the title compound.

Workup

  1. temperatureHeat to reflux
  2. customevaporate the reaction mixture in vacuo
  3. customto give a residue
  4. extractionExtract with water and brine
  5. dry with materialDry the organic layer over Na2SO4
  6. filtrationfilter
  7. customevaporate in vacuo

Sources & evidence

ORD record
ord-875597e4851c4950a0d3f883c7e4357e
Source dataset
uspto-grants-1999_08
Patent number
US05932571

Reaction notes

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