반응 #323326
ord-a9e6511e140b4c05b2ac1d3e4f31c49b
반응 방정식
반응물
시약
용매
반응 조건
후처리
- 1온도the mixture was heated
- 2온도at reflux for 18 hr
- 3농축The solution was concentrated under reduced pressure
- 4여과The mixture was filtered
- 5농축the filtrate was concentrated
- 6workup.DISSOLUTIONThe residue was dissolved in chloroform and to the solution
- 7온도The mixture was heated
- 8온도at reflux for 0.5 hr
- 9기타did not exceed 25° C
- 10세척washed consecutively with 3N hydrochloric acid, 15% aqueous sodium hydroxide and water
- 11건조The chloroform layer was dried over magnesium sulfate
- 12농축concentrated under reduced pressure
실험 절차
To a solution of 9.6 g (0.24 mole) of sodium hydroxide in 200 ml of water was added 37 g (0.12 mole) of 5-bromo-2-[(1-methyl-3-pyrrolidinyl)oxy]-benzamide and the mixture was heated at reflux for 18 hr. The pH of the mixture was adjusted to 6.7 with concentrated hydrochloric acid solution. The solution was concentrated under reduced pressure and the residue was boiled in 250 ml of isopropyl alcohol for 1 hr. The mixture was filtered and the filtrate was concentrated. The residue was dissolved in chloroform and to the solution was added 28.3 g (0.24 mole) of thionyl chloride. The mixture was heated at reflux for 0.5 hr and cooled to 15° C. with an ice bath. To the mixture was added dropwise 26.6 g (0.26 mole) of triethylamine at such a rate that the temperature did not exceed 25° C. The reaction mixture was stirred at room temperature for 1 hr, then washed consecutively with 3N hydrochloric acid, 15% aqueous sodium hydroxide and water. The chloroform layer was dried over magnesium sulfate and concentrated under reduced pressure to give 23 g (60%) of brown solid. A portion of the solid was recrystallized from ethyl acetate-isopropyl ether, m.p. 92°-94° C.