反应详情

A solution of biphenyl-4,4′-dicarbaldehyde (0.21 g), pyrrolidine (83 μL), and acetic acid (57 μL) in DCM (5 mL) was treated with sodium triacetoxyborohyride (0.34 g). After 16 hours, the resulting mixture was treated with 3M NaOH (1.5 mL) and extracted with DCM (3×10 mL). The combined organic phases were dried over sodium sulfate and evaporated. The residue was purified via preparative thin layer chromatography eluting with 5% MeOH/DCM to give the title compound (42.5 mg). 1H NMR (400 MHz, CDCI3)δ10.05 (s, 1 H), 7.94 (d, J=8.0, 2 H), 7.75 (d, J=8.0, 2 H), 7.60 (d, J=8.0, 2 H), 7.47 (d, J=8.0, 2 H), 3.72 (s, 2 H), 2.61 (br s, 4 H), 1.84 (br s, 4 H).

1. extractionextracted with DCM (3×10 mL)
2. dry with materialThe combined organic phases were dried over sodium sulfate
3. customevaporated
4. customThe residue was purified via preparative thin layer chromatography
5. washeluting with 5% MeOH/DCM