Phenol → 3-(Phenyloxy)-2-(3-pyridylmethyl)-1-azabicyclo[2.2.2]octane
Reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([CH2:7][CH:8]2[CH:13]([OH:14])[CH:12]3[CH2:15][CH2:16][N:9]2[CH2:10][CH2:11]3)[CH:2]=1.[C:17]1(O)[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>>[C:17]1([O:14][CH:13]2[CH:12]3[CH2:11][CH2:10][N:9]([CH2:16][CH2:15]3)[CH:8]2[CH2:7][C:3]2[CH:2]=[N:1][CH:6]=[CH:5][CH:4]=2)[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1Participants
Procedure
The manner in which 3-(phenyloxy)-2-(3-pyridylmethyl)-1-azabicyclo[2.2.2]octane of the present invention is synthesized can vary. For example, pyridine-3-carboxaldehyde and quinuclidin-3-one hydrochloride (commercially available from Aldrich) are reacted together in the presence of methanolic potassium hydroxide as described in Neilsen and Houlihan, Org. React. 16: 14-38 (1968). This aldol condensation product, 2-(3-pyridylmethylene)-1-azabicyclo[2.2.2]octan-3-one, is then dissolved in methanol and hydrogenated in the presence of Raney nickel catalyst to afford 2-(3-pyridylmethyl)-1-azabicyclo[2.2.2]octan-3-ol. This alcohol is then etherified with phenol via Mitsunobu coupling with diethylazidocarboxylate and triphenylphosphine, as described by Guthrie et al., J. Chem. Soc., Perkin Trans I45: 2328 (1981), to afford the desired product, 3-(phenyloxy)-2-(3-pyridylmethyl)-1-azabicyclo[2.2.2]octane.
Sources & evidence
- ORD record
- ord-93d5218b41c0411ba08ba2eebb00cc90
- Source dataset
- uspto-grants-2002_08
- Patent number
- US06432975B1
Reaction notes
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