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Ammonium Acetate → 5-bromo-2-(5-{1-[4-(methylsulfonyl)phenyl]-2-(tetrahydro-2H-pyran-4-yl)ethyl}-1H-pyrrol-2-yl)pyridine

HRID 1881992
Notes
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Reaction equation

HRID 1881992 reaction equation
[Br:1][C:2]1[CH:3]=[CH:4][C:5]([C:8](=O)[CH2:9][CH2:10][C:11](=O)[CH:12]([C:20]2[CH:25]=[CH:24][C:23]([S:26]([CH3:29])(=[O:28])=[O:27])=[CH:22][CH:21]=2)[CH2:13][CH:14]2[CH2:19][CH2:18][O:17][CH2:16][CH2:15]2)=[N:6][CH:7]=1.C([O-])(=O)C.[NH4+:36]>C(O)(=O)C.C(OCC)(=O)C>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[NH:36][C:11]([CH:12]([C:20]3[CH:25]=[CH:24][C:23]([S:26]([CH3:29])(=[O:28])=[O:27])=[CH:22][CH:21]=3)[CH2:13][CH:14]3[CH2:19][CH2:18][O:17][CH2:16][CH2:15]3)=[CH:10][CH:9]=2)=[N:6][CH:7]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 517165Ammonium AcetateHCID 593316251-(5-bromopyridin-2-yl)-5-[4-(methylsulfonyl)phenyl]-6-(tetrahydro-2H-pyran-4-yl)hexane-1,4-dione

Product 1

HCID 593316205-bromo-2-(5-{1-[4-(methylsulfonyl)phenyl]-2-(tetrahydro-2H-pyran-4-yl)ethyl}-1H-pyrrol-2-yl)pyridineYield 86%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolvent
HCID 8857
Ethyl Acetate
Solvent

Conditions

Temperature
110 °C

Procedure

To a solution of 1-(5-bromopyridin-2-yl)-5-[4-(methylsulfonyl)phenyl]-6-(tetrahydro-2H-pyran-4-yl)hexane-1,4-dione (3.89 g) in acetic acid (40 mL) was added ammonium acetate (9.50 g), and the mixture was stirred at 110° C. for 45 min. After cooling to room temperature, the reaction mixture was diluted with ethyl acetate and washed with water. The ethyl acetate layer was washed with saturated aqueous sodium hydrogen carbonate and saturated brine, dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and the title compound (3.20 g, yield 86%) was obtained as a colorless amorphous solid from a fraction eluted with ethyl acetate-hexane (1:1, volume ratio). MS: 491 (MH+).

Workup

  1. temperatureAfter cooling to room temperature
  2. washwashed with water
  3. washThe ethyl acetate layer was washed with saturated aqueous sodium hydrogen carbonate and saturated brine
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-44591b91d7494dae920f23f6fc2cd6ec
Source dataset
uspto-grants-2012_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08318746B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes