Sodium Hydroxide → HCID 21896955, compound
Reaction equation
[OH:1][CH:2]1[CH2:7][CH2:6][NH:5][CH2:4][CH2:3]1.[OH-].[Na+].Cl[C:11]1[N:16]=[C:15]([NH:17][C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[C:20]([Cl:26])[CH:19]=2)[N:14]=[C:13]([NH:27][CH:28]2[CH2:34][CH2:33][CH2:32][CH2:31][CH2:30][CH2:29]2)[N:12]=1>C1C=CC=CC=1>[Cl:26][C:20]1[CH:19]=[C:18]([NH:17][C:15]2[N:14]=[C:13]([NH:27][CH:28]3[CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34]3)[N:12]=[C:11]([N:5]3[CH2:6][CH2:7][CH:2]([OH:1])[CH2:3][CH2:4]3)[N:16]=2)[CH:23]=[CH:22][C:21]=1[O:24][CH3:25]Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 25 °C
Procedure
A mixture of 4-hydroxypiperidine (0.198 g, 1.96 mmol) and sodium hydroxide (79 mg, 1.96 mmol) in benzene (10 mL) was heated to reflux for 2 hours with stirring under nitrogen atmosphere and then cooled to 25° C. followed by the addition of compound 133 (0.25 g, 0.65 mmol) at same temperature. The mixture was heated to reflux for 6 hours, concentrated under vacuum and diluted with water (10 mL). The precipitated solid was filtered off and purified by column chromatography (1–2% MeOH—CHCl3) to afford the title compound E24 as an off-white solid (0.20 g, 58%). mp 142–144° C.; HPLC: Hichrom RPB (250×4.6 mm) 5 microns [solvent A=0.01 M KH2PO4 (pH 5.5); solvent B=CH3CN], Gradient elution program: T/% B=0/20, 10/20, 25/80, 40/80, 55/60, 65/20, 70/20; 270 nm, Rt 40.56 min, 98.60% purity; MS (CI): m/z 447 (M+H, 100).
Workup
- temperaturewas heated
- temperatureto reflux for 2 hours
- temperatureThe mixture was heated
- temperatureto reflux for 6 hours
- concentrationconcentrated under vacuum
- additiondiluted with water (10 mL)
- filtrationThe precipitated solid was filtered off
- custompurified by column chromatography (1–2% MeOH—CHCl3)
Sources & evidence
- ORD record
- ord-80f03159f5344a5cafa05e1006477d2a
- Source dataset
- uspto-grants-2007_01
- Patent number
- US07163943B2
Reaction notes
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