反应详情

A solution of 77 mg (0.17 mmol) trans-N-methyl-N-[4-(4-methylamino-(E)-but-2-enyloxymethyl)-cyclohexylmethyl]-4-trifluoromethyl-benzenesulfonamide (example 20.6), 0.044 g (0.34 mmol) of 4-chloro-2-methyl-pyrimidine [Ger. Offen. (1990), DE3905364 A1] and 0.06 ml (0.34 mmol) N-ethyl-diisopropylamine in 1 ml of N,N-dimethylformamide was stirred for 2 hours at 80° C. The reaction mixture was then cooled to room temperature, poured into 30 ml of ice-water and extracted 3 times with 10 ml of ether. The combined ether phases were washed with brine, dried over magnesium sulfate and evaporated under reduced pressure. The residue formed was chromatographed on silica gel with a 95:5:1 v/v/v mixture of dichloromethane, methanol and saturated aqueous ammonia as the eluent giving 55 mg (59%) trans-N-methyl-N-(4-{4-[methyl-(2-methyl-pyrimidin-4-yl)-amino]-(E)-but-2-enyloxymethyl}-cyclohexylmethyl)-4-trifluoromethyl-benzenesulfonamide as yellowish viscous oil, MS: 541 (MH+).

1. extractionextracted 3 times with 10 ml of ether
2. washThe combined ether phases were washed with brine
3. dry with materialdried over magnesium sulfate
4. customevaporated under reduced pressure
5. customThe residue formed
6. customwas chromatographed on silica gel with a 95:5:1 v/v/v mixture of dichloromethane, methanol and saturated aqueous ammonia as the eluent