반응 #3016

반응 방정식

2,6-dimethoxy-4-methylaniline

formic acid

2-adamantanone

→

N-(2-adamantyl)-2,6-dimethoxy-4-methylaniline

수율 52.0%

용매

toluene

toluene

반응 조건

후처리

1. 1
   workup.ADDITIONis added dropwise at this temperature
2. 2
   온도The reaction mixture is heated
3. 3
   온도at reflux for 48 hours
4. 4
   기타is then evaporated to dryness
5. 5
   여과The insoluble white crystals are filtered
6. 6
   추출The acidic filtrate is extracted with dichloromethane
7. 7
   세척The organic extracts are washed with a 5% aqueous sodium bicarbonate solution
8. 8
   건조with water and the organic phases are then dried over anhydrous sodium sulphate
9. 9
   기타Evaporation
10. 10
    기타leaves a colourless residue which
11. 11
    기타is purified by flash chromatography on a column of silica gel, eluent

실험 절차

2.1 g of 2,6-dimethoxy-4-methylaniline are dissolved in 10 ml of toluene, 0.5 ml of formic acid is then added to this solution and the mixture is heated to gentle reflux, under inert atmosphere, and 0.93 g of 2-adamantanone, dissolved in 10 ml of toluene, is added dropwise at this temperature. The reaction mixture is heated at reflux for 48 hours, is then evaporated to dryness and the residue is taken up in 30 ml of 2N hydrochloric acid. The insoluble white crystals are filtered and discarded. The acidic filtrate is extracted with dichloromethane. The organic extracts are washed with a 5% aqueous sodium bicarbonate solution and then with water and the organic phases are then dried over anhydrous sodium sulphate. Evaporation leaves a colourless residue which is purified by flash chromatography on a column of silica gel, eluent: toluene/ethyl acetate 7/3 (v/v) in order to obtain N-(2-adamantyl)-2,6-dimethoxy-4-methylaniline; M.p.=100° C., Yield 52%.

출처