Sodium Hydroxide → 7-[6-(4-Methoxy-benzylamino)-pyridin-2-yl]-1-quinoxalin-2-yl-hept-1-en-3-one

HRID 2120691Notes

Reaction equation

HRID 2120691 reaction equation
COP([CH2:7][C:8](=[O:29])[CH2:9][CH2:10][CH2:11][CH2:12][C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([NH:19][CH2:20][C:21]2[CH:26]=[CH:25][C:24]([O:27][CH3:28])=[CH:23][CH:22]=2)[N:14]=1)(=O)OC.[N:30]1[C:39]2[C:34](=[CH:35][CH:36]=[CH:37][CH:38]=2)[N:33]=[CH:32][C:31]=1[CH:40]=O.[OH-].[Na+]>C1COCC1>[CH3:28][O:27][C:24]1[CH:23]=[CH:22][C:21]([CH2:20][NH:19][C:15]2[N:14]=[C:13]([CH2:12][CH2:11][CH2:10][CH2:9][C:8](=[O:29])[CH:7]=[CH:40][C:31]3[CH:32]=[N:33][C:34]4[C:39](=[CH:38][CH:37]=[CH:36][CH:35]=4)[N:30]=3)[CH:18]=[CH:17][CH:16]=2)=[CH:26][CH:25]=1

Participants

5

Reactant 3

HCID 14798Sodium HydroxideHCID 594088Quinoxaline-2-carbaldehydeHCID 58765549{6-[6-(4-Methoxy-benzylamino)-pyridin-2-yl]-2-oxo-hexyl}-phosphonic acid dimethyl ester

Product 1

HCID 696661987-[6-(4-Methoxy-benzylamino)-pyridin-2-yl]-1-quinoxalin-2-yl-hept-1-en-3-oneYield 88.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 6-7 (12.0 g, 28.5 mmol) and quinoxaline-2-carbaldehyde 22-1 (4.51 g, 28.5 mmol) in THF (250 mL) at 0° C. was added 4M NaOH (7.49 mL, 29.9 mmol) dropwise. After 15 minutes the ice bath was removed and the mixture stirred for an additional 10 minutes. The solution was diluted with water, extracted with ethyl acetate, and dried (Na2SO4). Following concentration, the residue was triturated with ether to give 11.4 g (88%) of 22-2 as a white solid.

Workup

  1. customAfter 15 minutes the ice bath was removed
  2. additionThe solution was diluted with water
  3. extractionextracted with ethyl acetate
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentration
  6. customthe residue was triturated with ether

Sources & evidence

ORD record
ord-83d884bf93ad4e9ea6ee0cf9504f7336
Source dataset
uspto-grants-2004_02
Patent number
US06693101B2

Reaction notes

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