Cesium carbonate → (2S,4R)-4-(4-{4-[Acetyl-(4-chloro-phenyl)-amino]-2-methyl-3,4-dihydro-2H-quinoline-1-carbonyl}-phenoxy)-2-methyl-butyric acid methyl ester

HRID 1786065Notes

Reaction equation

HRID 1786065 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]([C@H:12]2[C:21]3[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=3)[N:15]([C:22](=[O:30])[C:23]3[CH:28]=[CH:27][C:26]([OH:29])=[CH:25][CH:24]=3)[C@@H:14]([CH3:31])[CH2:13]2)[C:9](=[O:11])[CH3:10])=[CH:4][CH:3]=1.C([O-])([O-])=O.[Cs+].[Cs+].[CH3:38][O:39][C:40](=[O:46])[CH:41]([CH3:45])[CH2:42][CH2:43]Cl>CN(C=O)C>[CH3:38][O:39][C:40](=[O:46])[C@@H:41]([CH3:45])[CH2:42][CH2:43][O:29][C:26]1[CH:25]=[CH:24][C:23]([C:22]([N:15]2[C:16]3[C:21](=[CH:20][CH:19]=[CH:18][CH:17]=3)[C@H:12]([N:8]([C:9](=[O:11])[CH3:10])[C:5]3[CH:4]=[CH:3][C:2]([Cl:1])=[CH:7][CH:6]=3)[CH2:13][CH:14]2[CH3:31])=[O:30])=[CH:28][CH:27]=1

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 11263584Methyl 4-Chloro-2-methylbutyrateHCID 58859774N-(4-chlorophenyl)-N-[(2S,4R)-1-(4-hydroxybenzoyl)-2-methyl-1,2,3,4-tetrahydro-quinolin-4-yl]acetamide

Product 1

HCID 68922830(2S,4R)-4-(4-{4-[Acetyl-(4-chloro-phenyl)-amino]-2-methyl-3,4-dihydro-2H-quinoline-1-carbonyl}-phenoxy)-2-methyl-butyric acid methyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

(2S,4R)-N-(4-Chloro-phenyl)-N-[1-(4-hydroxy-benzoyl)-2-methyl-1,2,3,4-tetrahydro-quinolin-4-yl]-acetamide (230 mg, 0.531 mmol) was dissolved in DMF (5 mL) at room temperature. Cs2CO3 (433 mg, 1.33 mmol) was added followed by 4-chloro-2-methyl-butyric acid methyl ester (120 mg, 0.796 mmol) and the reaction was allowed to stir overnight. The mixture was partitioned between methylene chloride and water; the organic layer was dried over Na2SO4, filtered and concentrated. The crude residue was purified by silica gel chromatography (1/1 hexanes/ethyl acetate—ethyl acetate gradient) to afford the product.

Workup

  1. customThe mixture was partitioned between methylene chloride and water
  2. dry with materialthe organic layer was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe crude residue was purified by silica gel chromatography (1/1 hexanes/ethyl acetate—ethyl acetate gradient)
  6. customto afford the product

Sources & evidence

ORD record
ord-03d10e81aa00494884e9c2c478e63a25
Source dataset
uspto-grants-2009_03
Patent number
US07504508B2

Reaction notes

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