Dimethyl Sulfoxide → N-{6-[Acetyl(methyl)amino]pyridin-3-yl]-4-(3-phenyl-1,2,4-thiadiazol-5-yl)piperazine-1-carboxamide

A solution of 2,2,2-trichloroethyl {6-[acetyl(methyl)amino]pyridin-3-yl}carbamate (200 mg, 0.587 mmol), 1-(3-phenyl-1,2,4-thiadiazol-5-yl)piperazine (145 mg, 0.587 mmol), diisopropylethylamine (0.102 ml, 0.587 mmol) and dimethylsulfoxide (4 ml) was stirred at 70° C. for 12 hours, the reaction mixture was poured into water and the mixture was extracted with ethyl acetate. The extract was washed with water and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure. The residue was recrystallized from a mixed solvent of ethyl acetate and hexane to obtain the desired product (101 mg, 39.3%) as a solid.

1. extractionthe mixture was extracted with ethyl acetate
2. washThe extract was washed with water
3. dry with materialdried over anhydrous magnesium sulfate
4. distillationThe solvent was distilled off under reduced pressure
5. customThe residue was recrystallized from a mixed solvent of ethyl acetate and hexane

ORD record

ord-66ff1180cdcd4791bdd75b5c41a1bda0

Source dataset

uspto-grants-2010_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07851473B2