反应详情

To a solution of 3-[6-(4-amino-2-fluorophenoxy)pyrimidin-4-yl]-1-[1-(2-dimethylaminoethyl)piperidin-4-yl]-1-methylurea (110 mg) in ethanol (2.0 ml) was added (1S)-(+)-10-camphorsulfonic acid (101 mg), followed by stirring at room temperature for 15 min. A solution of 2-phenylacetyl isothiocyanate in toluene (0.25 M, 3.06 ml) was added to the reaction mixture, followed by stirring at room temperature for 2 hrs. The reaction mixture was partitioned between ethyl acetate (30 ml) and a saturated aqueous solution of sodium hydrogencarbonate (10 ml). The organic layer was washed with brine, and dried over anhydrous sodium sulfate. The organic layer was concentrated to give a residue, which was then purified by silica gel column chromatography (FUJI Silysia NH, eluent; ethyl acetate, ethyl acetate:methanol=20:1, then 10:1). Fractions containing a target compound were concentrated to give a solid, which was suspended in diethyl ether:hexane=1:1. The solid was filtered off, and washed with diethyl ether to provide the titled compound (25.3 mg, 16.3%) as pale yellow powder.

1. stirringby stirring at room temperature for 2 hrs
2. customThe reaction mixture was partitioned between ethyl acetate (30 ml)
3. washThe organic layer was washed with brine
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationThe organic layer was concentrated
6. customto give a residue, which
7. customwas then purified by silica gel column chromatography (FUJI Silysia NH, eluent
8. additionFractions containing a target compound
9. concentrationwere concentrated
10. customto give a solid, which
11. filtrationThe solid was filtered off
12. washwashed with diethyl ether