反应详情

0.351 g of cis-4-(4-methoxycarbonylcyclohexyloxy)benzoic acid (1.26 mmol, 1 eq.) is placed in 5 mL of dichloromethane at room temperature. 0.42 mL of diisopropylethylamine (2.52 mmol, 2 eq.), 0.705 g of bromotris-pyrrolidinophosphonium hexafluorophosphonate (1.51 mmol, 1.2 eq.) and 0.267 g of 3-chlorophenyl-1,3,4-thiadiazol-2-amine (1.26 mmol, 1 eq.) are added successively. 2 mL of DMF are added. The reaction mixture is stirred for 1 day at room temperature, diluted in dichloromethane, and water is added. Filtration of this medium gives 0.06 g of methyl cis-4-{4-[5-(3-chlorophenyl)[1.3.4]thiadiazol-2-ylcarbamoyl]phenoxy}cyclohexanecarboxylate. The organic phase is separated out by settling, washed with water, dried over sodium sulfate, filtered and evaporated. The residue is taken up in ethanol, filtered off by suction and washed with diethyl ether. 0.090 g of methyl cis-4-{4-[5-(3-chlorophenyl)[1.3.4]thiadiazol-2-ylcarbamoyl]phenoxy}cyclohexanecarboxylate is obtained.

1. filtrationFiltration of this medium