3-Aminopentan-2-ol → 2-(4-Chloro-2,6-dimethyl-phenoxy)-4-(1-ethyl-2-hydroxy-propylamino)-6-methyl-nicotinic acid methyl ester
Reaction equation
[CH3:1][O:2][C:3](=[O:22])[C:4]1[C:9](Cl)=[CH:8][C:7]([CH3:11])=[N:6][C:5]=1[O:12][C:13]1[C:18]([CH3:19])=[CH:17][C:16]([Cl:20])=[CH:15][C:14]=1[CH3:21].[NH2:23][CH:24]([CH2:28][CH3:29])[CH:25]([OH:27])[CH3:26]>CN1CCCC1=O>[CH3:1][O:2][C:3](=[O:22])[C:4]1[C:9]([NH:23][CH:24]([CH2:28][CH3:29])[CH:25]([OH:27])[CH3:26])=[CH:8][C:7]([CH3:11])=[N:6][C:5]=1[O:12][C:13]1[C:18]([CH3:19])=[CH:17][C:16]([Cl:20])=[CH:15][C:14]=1[CH3:21]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 130 °C
Procedure
A mixture of 4-chloro-2-(4-chloro-2,6-dimethyl-phenoxy)-6-methyl-nicotinic acid methyl ester (500 mg, 1.47 mmol) and 3-amino-pentan-2-ol (758 mg, 7.35 mmol) in 1-methyl-2-pyrrolidinone was heated in 130° C. oil bath for 24 hr. The mixture cooled to rt and quenched with water and extracted with ethyl acetate. The organic layer was separated, washed with water, dried over anhydrous sodium sulfate, filtered, and concentrated to dryness to give an oil. The oil was purified through silica gel column chromatography using 20% ethyl acetate in hexane as eluent to give the title compound as a white crystal, mp 133-135° C.
Workup
- temperatureThe mixture cooled to rt
- customquenched with water
- extractionextracted with ethyl acetate
- customThe organic layer was separated
- washwashed with water
- dry with materialdried over anhydrous sodium sulfate
- filtrationfiltered
- concentrationconcentrated to dryness
- customto give an oil
- customThe oil was purified through silica gel column chromatography
Sources & evidence
- ORD record
- ord-1932937d5e424b8f87fdad2dd595a6f5
- Source dataset
- uspto-grants-2005_10
- Patent number
- US06956047B1
Reaction notes
Loading…