2-Bromoethanol → N-[(4-chlorophenyl)methyl]-7-(2-hydroxyethyl)-2-(3-hydroxypropyl)-4-oxo-thieno[2,3-b]pyridine-5-carboxamide

HRID 2299299Notes

Reaction equation

HRID 2299299 reaction equation
[Cl:1][C:2]1[CH:25]=[CH:24][C:5]([CH2:6][NH:7][C:8]([C:10]2[C:11]([OH:23])=[C:12]3[CH:18]=[C:17]([CH2:19][CH2:20][CH2:21][OH:22])[S:16][C:13]3=[N:14][CH:15]=2)=[O:9])=[CH:4][CH:3]=1.C([O-])([O-])=O.[K+].[K+].Br[CH2:33][CH2:34][OH:35].[H-].[Na+]>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:6][NH:7][C:8]([C:10]2[C:11](=[O:23])[C:12]3[CH:18]=[C:17]([CH2:19][CH2:20][CH2:21][OH:22])[S:16][C:13]=3[N:14]([CH2:33][CH2:34][OH:35])[CH:15]=2)=[O:9])=[CH:24][CH:25]=1

Participants

6

Reactant 4

HCID 108982-Bromoethanol3×HCID 11430Potassium Carbonate2×HCID 24758Sodium hydrideHCID 178522938HCID 178522938, compound

Product 1

HCID 6482397N-[(4-chlorophenyl)methyl]-7-(2-hydroxyethyl)-2-(3-hydroxypropyl)-4-oxo-thieno[2,3-b]pyridine-5-carboxamideYield 39%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

To a solution of N-(4-chlorobenzyl)-4-hydroxy-2-(3-hydroxypropyl)-thieno-[2,3-b]pyridine-5-carboxamide (Example No. 8) (0.330 g) in DMF (5 mL) are added K2CO3 (0.363 g) and 2-bromoethanol (0.19 mL). The reaction is heated to 100° C. and stirred for 18 h. An additional 0.19 mL of 2-bromoethanol is added and stirring is continued for 18 h. An additional 0.19 mL of 2-bromoethanol and 0.363 g of K2CO3 is added. After 5 h, 35 mg of NaH (60% oil dispersion) is added. The reaction is stirred for 1 h. The reaction mixture is cooled to rt and concentrated in vacuo. The residue is suspended in CH2Cl2 and H2O. The resulting off-white precipitate is filtered off and purified via column chromatography (CH2Cl2:CH3OH; 98:2, 95:5). Fractions homogeneous by TLC are combined and concentrated in vacuo to yield 0.145 g (39%) of the title compound as a white solid.

Workup

  1. stirringstirring
  2. waitis continued for 18 h
  3. waitAfter 5 h
  4. stirringThe reaction is stirred for 1 h
  5. temperatureThe reaction mixture is cooled to rt
  6. concentrationconcentrated in vacuo
  7. filtrationThe resulting off-white precipitate is filtered off
  8. custompurified via column chromatography (CH2Cl2:CH3OH; 98:2, 95:5)
  9. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-628a6efb5eb941bcac3ceade7282d9d9
Source dataset
uspto-grants-2002_12
Patent number
US06495683B2

Reaction notes

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