Water → N-(5-ethyl-1,3,4-oxadiazol-2-yl)-4-(3-phenyl-1,2,4-thiadiazol-5-yl)piperazine-1-carboxamide

A mixed solution of 2,2,2-trichloroethyl (5-ethyl-1,3,4-oxadiazol-2-yl)carbamate (213 mg, 0.738 mmol), 1-(3-phenyl-1,2,4-thiadiazol-5-yl)piperazine (200 mg, 0.812 mmol) and diisopropylethylamine (0.129 ml, 0.738 mmol) in dimethyl sulfoxide (2.5 ml) was stirred at 70° C. for 3 hours and half. Water was poured to the reaction mixture, and the resulting solution was extracted with ethyl acetate. The extract was washed with water and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. Chloroform was poured to the residue, and 140 mg (49.1%) of the desired product as a solid was separated by filtration.

1. extractionthe resulting solution 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. additionChloroform was poured to the residue, and 140 mg (49.1%) of the desired product as a solid
6. customwas separated by filtration

ORDレコード

ord-31d8a92e0f9845988ec2b84ac1510c4f

出典データセット

uspto-grants-2010_12

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US07851473B2