“…3‐[2‐(1,3‐Dioxan‐2‐yl)ethyl]cyclohex‐2‐en‐1‐one (6) : 45 1 H NMR (400 MHz, CDCl 3 ): δ =5.70 (s, 1 H, CH), 4.39 (t, J =5.0 Hz, 1 H, CH), 3.93 (dd, 1 J =10.6, 2 J =5.0 Hz 2 H, CH 2 ), 3.60 (td, 1 J =12.4, 2 J =2.3 Hz, 2 H, CH 2 ), 2.21–2.14 (m, 6 H), 1.86–1.80 (m, 2 H, CH 2 ), 1.65–1.60 (m, 2 H, CH 2 ), 1.20 ppm (dt, 1 J =13.4, 2 J =1.2 Hz, 2 H, CH 2 ); 13 C NMR (100 MHz, CDCl 3 ): δ =199.6, 165.8, 125.4, 101.0, 66.7, 37.2, 32.1, 32.0, 29.6, 25.6, 22.6 ppm.…”