반응 #11995

반응 방정식

(4-amino-3-chloro-5-trifluoromethyl-phenyl)-ethylene oxide

tert-butylamine

→

2-(4-amino-3-chloro-5-trifluoromethylphenyl)-2-tert-butylaminoethanol

수율 20.0%

용매

ethanol

반응 조건

후처리

1. 1
   온도The mixture was refluxed for 13 h
2. 2
   기타evaporated
3. 3
   추출The residue was extracted with 2N hydrochloric acid for several times
4. 4
   추출extracted with toluene
5. 5
   workup.ADDITIONtreated with activated carbon
6. 6
   여과The precipitate was collected by filtration

실험 절차

5.2 g (0.022 mol) of (4-amino-3-chloro-5-trifluoromethyl-phenyl)-ethylene oxide was dissolved in 26 ml of anhydrous ethanol and treated with 5.1 ml (0.049 mol) of tert-butylamine. The mixture was refluxed for 13 h, and then evaporated. The residue was extracted with 2N hydrochloric acid for several times. Aqueous layers were combined and extracted with toluene and treated with activated carbon. The pH was adjusted to 10 with 20% sodium hydroxide solution. The precipitate was collected by filtration, 2-(4-amino-3-chloro-5-trifluoromethylphenyl)-2-tert-butylaminoethanol was obtained. Yield 20–30%; melting point 85–90° C.

출처