Benzocaine → HCID 178469047, compound

HRID 56899Notes

Reaction equation

HRID 56899 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:30]#[N:31])=[C:6]([C:8]2[C:13]([O:14][CH3:15])=[CH:12][N:11]([CH:16]([CH2:20][C@H:21]3[CH2:26][CH2:25][C@@H:24]([O:27][CH3:28])[CH2:23][CH2:22]3)[C:17](O)=[O:18])[C:10](=[O:29])[CH:9]=2)[CH:7]=1.[NH2:32][C:33]1[CH:43]=[CH:42][C:36]([C:37]([O:39][CH2:40][CH3:41])=[O:38])=[CH:35][CH:34]=1.CC(C)N=C=NC(C)C>CN(C)C=O.[Cl-].[Li+].C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:30]#[N:31])=[C:6]([C:8]2[C:13]([O:14][CH3:15])=[CH:12][N:11]([CH:16]([CH2:20][C@H:21]3[CH2:26][CH2:25][C@@H:24]([O:27][CH3:28])[CH2:23][CH2:22]3)[C:17]([NH:32][C:33]3[CH:34]=[CH:35][C:36]([C:37]([O:39][CH2:40][CH3:41])=[O:38])=[CH:42][CH:43]=3)=[O:18])[C:10](=[O:29])[CH:9]=2)[CH:7]=1

Participants

7

Reactant 3

HCID 2337BenzocaineHCID 12734DiisopropylcarbodiimideHCID 178493734HCID 178493734, compound

Product 1

HCID 178469047HCID 178469047, compound

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolventHCID 433294Lithium ChlorideSolvent

Procedure

2.10 g (purity 74%, 4.72 mmol) of 2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-(cis-4-methoxycyclohexyl)propanoic acid (racemate), 780 mg (4.72 mmol) of ethyl 4-aminobenzoate, 671 mg (4.72 mmol) of Oxima and 735 μl (4.72 mmol) of DIC in 47 ml of dimethylformamide were reacted according to General Method 5B. After complete conversion, the reaction solution was diluted with 263 ml of 10% strength lithium chloride solution and 210 ml of ethyl acetate and the phases were separated. The aqueous phase was extracted twice with 210 ml of ethyl acetate. The combined organic phases were dried over magnesium sulphate and filtered, and the solvent was removed under reduced pressure. The crude product was purified by column chromatography (ethyl acetate/cyclohexane gradient, 100 g silica cartridge, flow rate 50 ml/min), giving the title compound. Yield: 2.1 g (75% of theory)

Workup

  1. customthe phases were separated
  2. extractionThe aqueous phase was extracted twice with 210 ml of ethyl acetate
  3. dry with materialThe combined organic phases were dried over magnesium sulphate
  4. filtrationfiltered
  5. customthe solvent was removed under reduced pressure
  6. customThe crude product was purified by column chromatography (ethyl acetate/cyclohexane gradient, 100 g silica cartridge, flow rate 50 ml/min)

Sources & evidence

ORD record
ord-e1929d1bc96644e79dce2adfa3f273e7
Source dataset
uspto-grants-2016_09
Patent number
US09434690B2

Reaction notes

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