Isonicotinic Acid → HCID 23144600, compound

HRID 337439Notes

Reaction equation

HRID 337439 reaction equation
[NH2:1][C:2]1[S:3][C:4]([C:12]2[CH:13]=[CH:14][C:15](=[O:20])[N:16]([CH2:18][CH3:19])[CH:17]=2)=[C:5]([C:7]2[O:8][CH:9]=[CH:10][CH:11]=2)[N:6]=1.[C:21](O)(=[O:28])[C:22]1[CH:27]=[CH:26][N:25]=[CH:24][CH:23]=1.C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.C(N(CC)CC)C>CN(C=O)C.O>[CH2:18]([N:16]1[CH:17]=[C:12]([C:4]2[S:3][C:2]([NH:1][C:21]([C:22]3[CH:27]=[CH:26][N:25]=[CH:24][CH:23]=3)=[O:28])=[N:6][C:5]=2[C:7]2[O:8][CH:9]=[CH:10][CH:11]=2)[CH:13]=[CH:14][C:15]1=[O:20])[CH3:19]

Participants

7

Reactant 4

HCID 5922Isonicotinic AcidHCID 8471TriethylamineHCID 2724699PyBOPHCID 23144092HCID 23144092, compound

Product 1

HCID 23144600HCID 23144600, compoundYield 25.2%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

2-Amino-5-(1-ethyl-2-oxo-1,2-dihydropyridin-5-yl)-4-(2-furyl)thiazole (287 mg, 1.00 mmol) obtained in Step 1 was dissolved in DMF (4 mL), and isonicotinic acid (246 mg, 2.00 mmol), PyBOP (1.14 g, 2.20 mmol) and triethylamine (0.613 mL, 4.40 mmol) were added thereto, followed by stirring at 80° C. for 1 hour. The reaction mixture was poured into water, followed by extraction with ethyl acetate. The organic layer was washed with a saturated aqueous solution of sodium chloride and dried over anhydrous magnesium sulfate, and then the solvent was distilled away under reduced pressure. The resulting residue was purified through silica gel column chromatography (chloroform:methanol=17:1), followed by reslurrying with a mixed solvent of methanol and diethyl ether to afford the entitled Compound 127 (99.0 mg, 25%) as a pale brown solid.

Workup

  1. extractionfollowed by extraction with ethyl acetate
  2. washThe organic layer was washed with a saturated aqueous solution of sodium chloride
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled away under reduced pressure
  5. customThe resulting residue was purified through silica gel column chromatography (chloroform:methanol=17:1)

Sources & evidence

ORD record
ord-fc9dd1c6f67142b7b62faa50f9bde682
Source dataset
uspto-grants-2014_11
Patent number
US08889718B2

Reaction notes

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