“…2‐Phenyl‐2 H ‐chromene (3d): The General Procedure with 1d (0.067 g, 0.51 mmol)/MeCN (0.5 mL)/PhMe (2.0 mL), 2a (0.668 g, 2.24 mmol)/MeCN (0.5 mL)/PhMe (2.0 mL) and CsF (0.467 g, 3.07 mmol) afforded 3d 27 (0.047 g, 45 %) as a clear oil {purified by flash chromatography [gradient eluents: petroleum ether/dichloromethane (20:1, v/v) containing triethylamine (3 ‰), then petroleum ether/ethyl acetate (80:1, v/v) containing triethylamine (3 ‰)]; R f = 0.71 [TLC eluent: petroleum ether/ethyl acetate (40:1, v/v)]}. 1 H NMR (400 MHz, [D 6 ]acetone): δ = 7.48–7.46 (m, 2 H), 7.39–7.30 (m, 3 H), 7.11 (td, J 1 = 7.6, J 2 = 1.2 Hz, 1 H), 7.07 (dd, J 1 = 7.4, J 2 = 1.4 Hz, 1 H), 6.86 (td, J 1 = 7.2, J 2 = 1.2 Hz, 1 H), 6.74 (d, J = 8.0 Hz, 1 H), 6.61 (d, J = 9.6 Hz, 1 H), 5.96–5.94 (m, 1 H), 5.92 (dd, J 1 = 9.6, J 2 = 3.6 Hz, 1 H) ppm.…”