反应详情

A solution of the compound of example 70 (1.55 g, 5.96 mmol) in anhydrous DMF (5 mL) was treated successively with DIEA (5.2 mL), 4-biphenylethyl amine (2.40 g, 11.92 mmol) and TBTU (2.76 g, 8.34 mmol). The reaction mixture was stirred for 24 h at room temperature. The reaction mixture was treated with HCl (1M, excess) and the mixture was extracted several times with ethyl acetate. The recombined organic layer was washed with brine, dried over sodium sulfate, filtered and evaporated. The residue was flashed with 30% ethyl acetate in hexanes and the desired product was obtained as a white solid. 1H-NMR(CDCl3, 400 MHz: 1.22(t, J=7.2, 3H); 1.42(s, 9H); 2.32-2.42(m, 2H); 2.60-2.75(m, 2H); 2.83(t, J=7.1 Hz, 2H); 3.02(m, 1H); 3.53(m, 2H); 4.11(m, 2H); 6.25(m, t, 5.1 Hz, 1H); 7.30(m, 3H); 7.43(m, 2H); 7.57(m, 4H).

1. extractionthe mixture was extracted several times with ethyl acetate
2. washThe recombined organic layer was washed with brine
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. customevaporated