反应详情

To a solution of {4-[(4-butylphenyl)ethynyl]benzyl}[2-(4-chlorophenyl)ethyl]amine (2.85 g, 7.1 mmol) and methyl 4-formylbenzoate (1.16 g, 7.1 mmol) in DCE (24 mL) was added at once sodium triacetoxyborohydride (2.25 g, 10.6 mmol) and the resulting reaction mixture was stirred 12 hrs at rt. The reaction mixture was poured into water and extracted with DCM. The combined organic layers were dried over MgSO4 and the solvents were removed under reduced pressure to give the crude product. Purification by chromatography on silicagel (EtOAc/c-hex (5/95)) gave 2.8 g (73%) of the title compound as a white solid. HPLC, Rt: 5.0 min (purity: 99.9%). 1H NMR (CDCl3) δ: 7.98 (d, J=8.3 Hz, 2H), 7.51-7.43. (m, 4H), 7.36 (d, J=8.3 Hz, 2H), 7.29-7.15 (m, 6H), 7.00 (d, J=8.3 Hz, 2H), 3.94 (s, 3H), 3.68 (s, 2H), 3.64 (s, 2H), 2.83-2.59 (m, 6H), 1.69-1.55 (m, 2H), 1.44-1.30 (m, 2H), 0.95 (J=7.2 Hz, 3H).

1. customthe resulting reaction mixture
2. extractionextracted with DCM
3. dry with materialThe combined organic layers were dried over MgSO4
4. customthe solvents were removed under reduced pressure
5. customto give the crude product
6. customPurification by chromatography on silicagel (EtOAc/c-hex (5/95))