Acetic Acid → HCID 178474467, compound

HRID 1788710Notes

Reaction equation

HRID 1788710 reaction equation
[C:1]([NH:4][C:5]1[N:6]=[C:7]([OH:29])[C:8]2[CH:14]=[C:13]([CH:15]=[CH:16][C:17]3[CH:22]=[CH:21][C:20]([C:23]([O:25]C(=O)C)=[O:24])=[CH:19][CH:18]=3)[CH:12]=[N:11][C:9]=2[N:10]=1)(=[O:3])[CH3:2].[OH-].[Na+].C(O)(=O)C>O>[C:1]([NH:4][C:5]1[N:6]=[C:7]([OH:29])[C:8]2[CH:14]=[C:13]([CH:15]=[CH:16][C:17]3[CH:22]=[CH:21][C:20]([C:23]([OH:25])=[O:24])=[CH:19][CH:18]=3)[CH:12]=[N:11][C:9]=2[N:10]=1)(=[O:3])[CH3:2]

Participants

5

Reactant 3

HCID 176Acetic AcidHCID 14798Sodium HydroxideHCID 178474468HCID 178474468, compound

Product 1

HCID 178474467HCID 178474467, compoundYield 77%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a suspension of 0.95 g of 2-acetamido-4-hydroxy-6-[2-(4-acetoxycarbonylphenyl)ethenyl]pyrido[2,3-d]pyrimidine in 50 mL of water was added 1N aqueous sodium hydroxide until a homogenous solution was obtained. Acidification with acetic acid resulted in the formation of a yellow precipitate which was collected by filtration. The filter cake was washed sequentially with water, methanol, acetone and ether. The residual solid was recrystallized from DMF to give 0.65 g (77%) of the title compound, which can be alternatively named as 2-acetamido-6-(4-carboxystyryl)-5-deaza-4(3H)-pteridinone, as a microcrystalline yellow solid, mp >300° C.; NMR (TFA-d1) delta 2.5 (s, 3H), 6.85, 7.32 (AB q, 2H, J=12 Hz), 7.45, 8.18 (AB q, 4H, J=9 Hz), 8.65 (s, 1H), 9.02 (s, 1H); IR (Nujol) 3300-2200 (br), 1685, 1655, 1630, 1600, 1565 cm-1 . MS: Calc'd. for C18H14N4O4 : 350. Found: m/e 350 (base), 308.

Workup

  1. customwas obtained
  2. filtrationwas collected by filtration
  3. washThe filter cake was washed sequentially with water, methanol, acetone and ether
  4. customThe residual solid was recrystallized from DMF

Sources & evidence

ORD record
ord-5258d9c22ca6449f97c85d5608de3d40
Source dataset
uspto-grants-1987_08
Patent number
US04684653

Reaction notes

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