Dimethyl Sulfoxide → N-(2-methyl-1,3-benzoxazol-6-yl)-4-(3-phenyl-1,2,4-thiadiazol-5-yl)piperazine-1-carboxamide

A solution of 2,2,2-trichloroethyl (2-methyl-1,3-benzoxazol-6-yl)carbamate (200 mg, 0.618 mmol), 1-(3-phenyl-1,2,4-thiadiazol-5-yl)piperazine (152 mg, 0.618 mmol), diisopropylethylamine (0.215 ml, 1.24 mmol) and dimethyl sulfoxide (4 ml) was stirred at 70° C. for 24 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 purified by silica gel column chromatography (ethyl acetate) to give the desired product as a solid. The solid was recrystallized from ethyl acetate to give 75.6 mg (29.1%) of the desired product 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 purified by silica gel column chromatography (ethyl acetate)

ORD 기록

ord-f3a0918c767e4269a10c7deb1a66e6c9

출처 데이터셋

uspto-grants-2010_12

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07851473B2