반응 #833513

반응 방정식

3-Ethoxy-4-(2-propenyloxy)benzaldehyde

sodium hydroxide

mesitylene

→

3-allyl-5-ethoxy-4-hydroxybenzaldehyde

반응 조건

후처리

1. 1
   온도After cooling
2. 2
   세척The aqueous phase was washed two times with diethyl ether
3. 3
   추출extracted with ethyl acetate
4. 4
   기타After drying
5. 5
   농축concentrating the organic phase, there
6. 6
   기타that crystallized
7. 7
   온도on cooling

실험 절차

3-Ethoxy-4-(2-propenyloxy)benzaldehyde (20.0 g, 0.087 mol) was heated under reflux in 75 ml mesitylene (1,3,5-trimethylbenzene) for 20 hours. After cooling, 250 ml 2N sodium hydroxide were added to the reaction mixture. The aqueous phase was washed two times with diethyl ether. The aqueous phase was subsequently acidified with concentrated hydrochloric acid under ice cooling and then extracted with ethyl acetate. After drying and concentrating the organic phase, there remained a light orange-colored oil that crystallized on cooling.

출처