Chloroform → Ethyl 2-ethyl-5-acetyl-3-[2'-(t-butoxycarbonyl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo[4,5-c]pyridine-4-carboxylate

HRID 1655127Notes

Reaction equation

HRID 1655127 reaction equation
[CH2:1]([C:3]1[N:16]([CH2:17][C:18]2[CH:23]=[CH:22][C:21]([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=3[C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])=[CH:20][CH:19]=2)[C:6]2[CH:7]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[NH:8][CH2:9][CH2:10][C:5]=2[N:4]=1)[CH3:2].[C:37](OC(=O)C)(=[O:39])[CH3:38].C(=O)([O-])O.[Na+].C(Cl)(Cl)Cl>O>[CH2:1]([C:3]1[N:16]([CH2:17][C:18]2[CH:19]=[CH:20][C:21]([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=3[C:30]([O:32][C:33]([CH3:34])([CH3:36])[CH3:35])=[O:31])=[CH:22][CH:23]=2)[C:6]2[CH:7]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[N:8]([C:37](=[O:39])[CH3:38])[CH2:9][CH2:10][C:5]=2[N:4]=1)[CH3:2]

Participants

6

Reactant 4

HCID 6212ChloroformHCID 7918Acetic AnhydrideHCID 516892Sodium BicarbonateHCID 19932990Ethyl 2-ethyl-3-[2'-(t-butoxycarbonyl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo[4,5-c]pyridine-4-carboxylate

Product 1

HCID 19932999Ethyl 2-ethyl-5-acetyl-3-[2'-(t-butoxycarbonyl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo[4,5-c]pyridine-4-carboxylate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of ethyl 2-ethyl-3-[2'-(t-butoxycarbonyl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo[4,5-c]pyridine-4-carboxylate (2.26 g), acetic anhydride (0.94 g), sodium hydrogen carbonate (2.33 g), chloroform (18 ml) and water (18 ml) is stirred overnight at room temperature. The organic layer is separated, washed with brine, dried, and evaporated. The residue is purified by silica gel column chromatography (solvent; chloroform/methanol) to give ethyl 2-ethyl-5-acetyl-3-[2'-(t-butoxycarbonyl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo [4,5-c]pyridine-4-carboxylate (2.10 9) as a white foam.

Workup

  1. customThe organic layer is separated
  2. washwashed with brine
  3. customdried
  4. customevaporated
  5. customThe residue is purified by silica gel column chromatography (solvent; chloroform/methanol)

Sources & evidence

ORD record
ord-6699db24e54345f995effac5dc58243a
Source dataset
uspto-grants-1995_04
Patent number
US05409936

Reaction notes

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