반응 #654323

반응 방정식

4-(4-fluorophenyl)-3-buten-2-one

hydroxylamine hydrochloride

sodium hydroxide

→

4-(4-fluorophenyl)-3-buten-2one 2-oxime

수율 63.3%

용매

methanol

반응 조건

후처리

1. 1
   온도at reflux for 2 hours
2. 2
   농축The reaction mixture was concentrated
3. 3
   workup.ADDITIONdiluted with water (50 ml)
4. 4
   추출extracted with ethyl acetate (2×50 ml)
5. 5
   기타The organic phase was dried
6. 6
   농축concentrated

실험 절차

In a 250 ml single neck flask was charged 4.92 g (30 mmoles, 1.0 eq.) of 4-(4-fluorophenyl)-3-buten-2-one and 5.2 g (75.4 mmoles, 2.5 eq) of hydroxylamine hydrochloride and 6 g of 50% sodium hydroxide (75 mmoles, 2.5 eq) and 100 ml of methanol. The reaction mixture was stirred at reflux for 2 hours. The reaction mixture was concentrated, diluted with water (50 ml), and then extracted with ethyl acetate (2×50 ml). The organic phase was dried and concentrated, to obtain 3.4 of 4-(4-fluorophenyl)-3-buten-2one 2-oxime (E/Z mixture of isomers) as an oil in 63.3% yield.

출처