反应详情

温度

0 °C

0.41 g (2.4 mmol) of 4-pyridylacetic acid hydrochloride were suspended in 80 ml of CH2Cl2; the suspension was cooled to 0° C. and 0.33 ml (2.4 mmol) of TEA, 0.64 g (4.7 mmol) of HOBT and 1.0 g (2.4 mmol) of (S)-N-(α-ethylbenzyl)-3-(2-aminoethoxy)-2-phenylquinoline-4-carboxamide (compound of Description 4) were added. 0.58 g (2.8 mmol) of DCC, dissolved in 10 ml of CH2Cl2, were added dropwise and the reaction mixture was stirred at 0° C. for 1 h and at room temperature overnight. The precipitated dicyclohexylurea was filtered off and the filtrate was washed with 20% citric acid, sat. sol. NaCl and brine, dried over Na2SO4 and evaporated in vacuo to dryness. The crude product was purified by flash column chromatography on 230-400 mesh silica gel, eluting with a mixture of CH2Cl2/MeOH 95:5 containing 0.5% NH4OH (28%), to yield, after trituration with i-Pr2O, 0.85 g of the title compound.

1. additionwere added dropwise
2. filtrationThe precipitated dicyclohexylurea was filtered off
3. washthe filtrate was washed with 20% citric acid, sat. sol. NaCl and brine
4. dry with materialdried over Na2SO4
5. customevaporated in vacuo to dryness
6. customThe crude product was purified by flash column chromatography on 230-400 mesh silica gel
7. washeluting with a mixture of CH2Cl2/MeOH 95:5 containing 0.5% NH4OH (28%)
8. customto yield