반응 #4758

반응 방정식

dimethyl 4-[2-(2-aminoethoxy)-5-nitrophenyl]-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

styrene oxide

→

dimethyl 4-[2-[2-(β-hydroxyphenethylamino)ethoxy]-5-nitrophenyl]-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

수율 19.3%

용매

N,N-dimethylformamide

반응 조건

후처리

1. 1
   기타the solution thus formed
2. 2
   농축The reaction solution was concentrated under reduced pressure
3. 3
   세척The product was eluted with chloroform-methanol (95:5 v/v)
4. 4
   기타Crude crystals were recrystallized from ethyl acetate

실험 절차

In 30 ml of N,N-dimethylformamide were dissolved 2 g of dimethyl 4-[2-(2-aminoethoxy)-5-nitrophenyl]-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate and 0.6 g of styrene oxide, and the solution thus formed was allowed to stand for 2 days at room temperature. The reaction solution was concentrated under reduced pressure, and the residue was subjected to silica gel column chromatography. The product was eluted with chloroform-methanol (95:5 v/v). Crude crystals were recrystallized from ethyl acetate to give 500 mg of dimethyl 4-[2-[2-(β-hydroxyphenethylamino)ethoxy]-5-nitrophenyl]-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate.

출처