Dicyclohexylcarbodiimide → HCID 20563557, compound

Participants

Reaction Steps

To a solution of 2.9 g of 5-(6-carboxyhexyloxy)-3,4-dihydrocarbostyril and 1.9 g of N-benzylcyclohexylamine in 100 ml of DMF is added gradually dropwise a solution of 2.1 g of N,N'-dicyclohexylcarbodiimide in 10 ml of DMF at room temperature and under agitation. After this agitation, the mixture is further agitated at room temperature for 5 hours. After the reaction, the insolubles are filtered off and the mother liquor is concentrated. The residue is dissolved in chloroform and subjected to silica gel thin-layer chromatography (solvent: chloroform-methanol (8:1) to scrape out the portion with Rf value of 0.8. The silica gel is extracted with chloroform, and after distilling off chloroform, the residue is recrystallized from benzene-ligroin to obtain 1.1 g of 5-[6-(N-cyclohexyl-N-benzylaminocarbonyl)hexyloxy]-3,4-dihydrocarbostyril in the form of colorless needle-like crystals with melting point of 49°-52° C.

Provenance & Evidence