Acetonitrile → 4-Azepan-1-ylbenzaldehyde

Participants

Reaction Steps

A solution of 4-fluoro-benzaldehyde (2.59 mL, 24.2 mmol) and hexamethyleneimine (8.2 mL, 72 mmol) in acetonitrile (40 mL) was heated at reflux for 16 hours. The product was preabsorbed onto silica gel and purified by flash silica gel chromatography, using ethyl acetate (10-15%) in hexane as the eluant, to give the product, 5.0 g (100%). MS: m/z 204 (MH+). 1H NMR (CDCl3): 1.53-1.59 (m, 4 H), 1.78-1.82 (m, 4 H), 3.53 (t, 4 H), 6.70 (d, 2 H), 7.70 (d, 2 H) and 9.70 (s, 1 H).

Provenance & Evidence