반응 #5744

반응 방정식

(-)-S-[(5-cyano-3-carboethoxy-4-(3-nitrophenyl)-6-methyl-1,4-dihydropyridin-2-yl)methyl]isothiourea

3-chloromethylpyridinium hydrochloride

chloride

KOH

→

(-)-2-(3-pyridinylmethylthio)methyl-5-cyano-3-carboethoxy-4-(3-nitrophenyl)-6-methyl-1,4-dihydropyridine

용매

benzene

반응 조건

후처리

1. 1
   기타to separate a precipitate that
2. 2
   여과is filtered
3. 3
   기타triturated with diethyl ether

실험 절차

A mixture of (-)-S-[(5-cyano-3-carboethoxy-4-(3-nitrophenyl)-6-methyl-1,4-dihydropyridin-2-yl)methyl]isothiourea (mg 500), 3-chloromethylpyridinium hydrochloride (mg 190), benzylthriethylammonium chloride (BTEAC mg 80), KOH (4M, ml 2) and benzene (ml 5) is stirred at room temperature for 15 minutes to separate a precipitate that is filtered and triturated with diethyl ether to give mg 450 of (-)-2-(3-pyridinylmethylthio)methyl-5-cyano-3-carboethoxy-4-(3-nitrophenyl)-6-methyl-1,4-dihydropyridine.

출처