Isonicotinic Acid → HCID 23144222, compound

HRID 337438Notes

Reaction equation

HRID 337438 reaction equation
[NH2:1][C:2]1[S:3][C:4]([C:12]2[CH:17]=[CH:16][N:15]([CH2:18][CH3:19])[C:14](=[O:20])[CH:13]=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:15]1[CH:16]=[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][C:14]1=[O:20])[CH3:19]

Participants

7

Reactant 4

HCID 5922Isonicotinic AcidHCID 8471TriethylamineHCID 2724699PyBOPHCID 23144139HCID 23144139, compound

Product 1

HCID 23144222HCID 23144222, compoundYield 37%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

2-Amino-5-(1-ethyl-2-oxo-1,2-dihydropyridin-4-yl)-4-(2-furyl)thiazole (167 mg, 0.582 mmol) obtained in Step 1 was dissolved in DMF (8 mL), and isonicotinic acid (143 mg, 1.16 mmol), PyBOP (664 mg, 1.28 mmol) and triethylamine (0.356 mL, 2.55 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 124 (83.5 mg, 37%) 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-23582f5ebe8946c4b095f57b02a479c9
Source dataset
uspto-grants-2014_11
Patent number
US08889718B2

Reaction notes

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