تفاعل #1555

معادلة التفاعل

5,6-diethyl-2-(3-formyl-phenyl)-3-propargyl-4(3H)-pyrimidinone

hydroxylamine hydrochloride

→

5,6-diethyl-2-(3-hydroxyiminophenyl)-3-propargyl-4(3H)-pyrimidinone

المردود 77.6%

5,6-Diethyl-2-(3-hydroxyiminophenyl)-3-propargyl-4(3H)-pyrimidinone

المردود 77.6%

المذيبات

ethanol

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةThe reaction mixture was refluxed for 17 hours
2. 2
   أخرىThe ethanol was removed in vacuo and ether and ethyl acetate
3. 3
   workup.ADDITIONwere added to the residue
4. 4
   غسيلThe organics were washed 3 times with water
5. 5
   ترشيحfiltered
6. 6
   أخرىto remove 0.22 g of 5,6-diethyl-2-(3-hydroxyiminophenyl)-3-propargyl-4(3H)-pyrimidinone (compound 139)
7. 7
   تجفيفThe organic layer was dried over MgSO4
8. 8
   تركيزconcentrated

الإجراء التجريبي

To a 100 mL RBF were charged 1.1 g (3.7 mmol) of 5,6-diethyl-2-(3-formyl-phenyl)-3-propargyl-4(3H)-pyrimidinone, 0.52 g (7.5 mmol) of hydroxylamine hydrochloride and 50 mL of ethanol. The reaction mixture was refluxed for 17 hours. The ethanol was removed in vacuo and ether and ethyl acetate were added to the residue. The organics were washed 3 times with water. The organic layer was gravity filtered to remove 0.22 g of 5,6-diethyl-2-(3-hydroxyiminophenyl)-3-propargyl-4(3H)-pyrimidinone (compound 139). The organic layer was dried over MgSO4 and concentrated to yield a further 0.67 g of 5,6-diethyl-2-(3-hydroxyiminophenyl)-3-propargyl-4(3H)-pyrimidinone (compound 139) as a white solid. A combined yield of 77.6% was obtained. 1H-NMR (CDCl3) 1.25(6H,m); 2.35(1H,t); 2.65(4H,m); 4.6(2H,d); 7.49-8.15(4H,m); 8.7(1H,s)

المصدر