Bromocyclopentane → 3-Cyclopentyloxy-4-methoxybenzaldehyde

Participants

Reaction Steps

Bromocyclopentane (1.4 mL, 13 mmol) was added to a suspension of isovanillin (1.0 g, 6.6 mmol) and potassium carbonate (2.7 g, 10 mmol) in EtOH (15 mL) and treated according to Procedure 3. 3-Cyclopentyloxy-4-methoxybenzaldehyde (1.4 g, 97%) was obtained as a yellow oil; δH (400 MHz, CDCl3) 1.63 (m, 2H, CH2), 1.79-1.93 (m, 4H, CH2), 1.99 (m, 2H, CH2), 3.93 (s, 3H, OCH3), 4.85 (tt, J=6.4, 3.2 Hz, 1H, OCH), 6.96 (d, J5,6=8.0 Hz, 1H, H5), 7.39 (d, J2,6=2.0 Hz, 1H, H2), 7.42 (dd, J5,6=8.0, J2,6=2.0 Hz, 1H, H6), 9.84 (s, 1H, CHO); δC (100 MHz, CDCl3) 24.1, 32.7, 56.1, 80.5, 110.7, 112.1, 126.3, 130.0, 148.2, 155.4, 191.0; vmax 1001, 1132, 1261, 1431, 1508, 1584, 1683, 2956 cm−1.

Provenance & Evidence