반응 #167222

반응 방정식

trans-1,2-diamino cyclohexane

potassium phosphate

1-(4-methyl-pyridin-3-yl)-imidazolidin-2-one

2-bromo-5-methylthiophene

→

1-(4-methyl-pyridin-3-yl)-3-(5-methyl-thiophen-2-yl)-imidazolidin-2-one

수율 74.0%

용매

MeOH

1,4-Dioxane

chloroform

반응 조건

후처리

1. 1
   기타previously degassed with argon (10 minutes)
2. 2
   기타The reaction mixture was purged with argon for a further 10 minutes
3. 3
   온도The resulting mixture was heated
4. 4
   여과The reaction mixture was filtered through celite
5. 5
   세척the celitebed was washed with chloroform
6. 6
   건조The organic layer was dried over Na2SO4
7. 7
   농축concentrated
8. 8
   기타The concentrate was quenched with ice
9. 9
   기타the precipitate formed
10. 10
    기타was collected
11. 11
    기타dried

실험 절차

Copper iodide (16 mg, 0.084 mmol), trans-1,2-diamino cyclohexane (28.8 mg, 0.25 mmol) and potassium phosphate (445 mg, 2.1 mmol) were added to 1,4-Dioxane (10 mL) previously degassed with argon (10 minutes). The reaction mixture was purged with argon for a further 10 minutes, followed by the addition of 1-(4-methyl-pyridin-3-yl)-imidazolidin-2-one (I-14b: 150 mg, 0.84 mmol) and 2-bromo-5-methylthiophene (150 mg, 0.84 mmol). The resulting mixture was heated to reflux at 110° C. for 4 hours. The reaction was monitored by TLC (10% MeOH in chloroform). The reaction mixture was filtered through celite and the celitebed was washed with chloroform. The organic layer was dried over Na2SO4 and concentrated. The concentrate was quenched with ice, the precipitate formed was collected and dried to afford 170 mg (74% yield) of 1-(4-methyl-pyridin-3-yl)-3-(5-methyl-thiophen-2-yl)-imidazolidin-2-one.

출처