Hydrochloric Acid → 2-Chloro-6-({(2-(4-chlorophenyl)-1,3-thiazol-4-yl)methyl}sulfanyl)-4-(4-(2-hydroxyethoxy)phenyl)pyridine-3,5-dicarbonitrile

HRID 1968297Notes

Reaction equation

HRID 1968297 reaction equation
N[C:2]1[C:7]([C:8]#[N:9])=[C:6]([C:10]2[CH:15]=[CH:14][C:13]([O:16][CH2:17][CH2:18][OH:19])=[CH:12][CH:11]=2)[C:5]([C:20]#[N:21])=[C:4]([S:22][CH2:23][C:24]2[N:25]=[C:26]([C:29]3[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][CH:30]=3)[S:27][CH:28]=2)[N:3]=1.N(OCCC(C)C)=O.[ClH:44]>C(#N)C.[Cu](Cl)Cl>[Cl:44][C:2]1[C:7]([C:8]#[N:9])=[C:6]([C:10]2[CH:11]=[CH:12][C:13]([O:16][CH2:17][CH2:18][OH:19])=[CH:14][CH:15]=2)[C:5]([C:20]#[N:21])=[C:4]([S:22][CH2:23][C:24]2[N:25]=[C:26]([C:29]3[CH:30]=[CH:31][C:32]([Cl:35])=[CH:33][CH:34]=3)[S:27][CH:28]=2)[N:3]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 8053Isoamyl NitriteHCID 9936489Capadenoson

Product 1

HCID 866438472-Chloro-6-({(2-(4-chlorophenyl)-1,3-thiazol-4-yl)methyl}sulfanyl)-4-(4-(2-hydroxyethoxy)phenyl)pyridine-3,5-dicarbonitrile

Reagents, catalysts & solvents 2

HCID 24014Cupric ChlorideCatalystHCID 6342AcetonitrileSolvent

Conditions

Temperature
70 °C

Procedure

15.00 g (28.84 mmol) of 2-amino-6-({(2-(4-chlorophenyl)-1,3-thiazol-4-yl)methyl}sulfanyl)-4-(4-(2-hydroxyethoxy)phenyl)pyridine-3,5-dicarbonitrile (Example 1A) were initially charged in 200 ml of acetonitrile, and 6.76 g (57.69 mmol) of isopentyl nitrite and 7.76 g (57.69 mmol) of copper(II) chloride were added. The mixture was stirred at 70° C. for 6 h. After cooling to RT, 750 ml of 1N hydrochloric acid were added and the mixture was stirred for 30 min. The aqueous phase was extracted three times with ethyl acetate. The combined organic phases were dried over sodium sulfate. After removal of the solvent, the crude product was purified by column chromatography on silica gel (mobile phase: toluene/ethyl acetate 4:1). This gave 10.8 g (69% of theory, purity 90%) of the desired target compound. For further purification, the product may, if appropriate, be triturated with diethyl ether.

Workup

  1. temperatureAfter cooling to RT
  2. stirringthe mixture was stirred for 30 min
  3. extractionThe aqueous phase was extracted three times with ethyl acetate
  4. dry with materialThe combined organic phases were dried over sodium sulfate
  5. customAfter removal of the solvent
  6. customthe crude product was purified by column chromatography on silica gel (mobile phase: toluene/ethyl acetate 4:1)
  7. customFor further purification
  8. customthe product may, if appropriate, be triturated with diethyl ether

Sources & evidence

ORD record
ord-0358954050434adf85793b5ac647366d
Source dataset
uspto-grants-2013_04
Patent number
US08420825B2

Reaction notes

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