“…Yellow oil; 85% (1.49 g); IR (thin film cm −1 ) 3050, 2952, 1595, 1457, 1421, 1339, 1299, 1253, 1197, 1152, 1060, 929, 838, 671; 1 H NMR (300 MHz, CDCl 3 ) δ 7.33 (d, J = 10.7 Hz, 1H); 7.01 (d, J = 10.7 Hz, 1H), 6.48 (d, J = 2.2 Hz, 2H), 6.39-6.38 (m, 1H), 3.82 (s, 6H), 2.74 (t, J = 7.5 Hz, 2H), 1.84 (qui, J = 7.2 Hz, 2H), 1.43 (sext, J = 7.2 Hz, 2H), 0.98 (t, J = 7.2 Hz, 3H); 13 C NMR (75 MHz, CDCl 3 ) δ 160.3, 140.6, 136.2, 105.8, 104.9, 99.5, 54.9, 33.5, 24.4, 12.9, 8.6; 125 (Z)-(1-(Butyltellanyl)dec-1-en-3-yloxy)triisopropylsilane (2c). 26 Yellow oil; 90% (2.24 g); 1 H NMR (300 MHz, CDCl 3 ) δ 6.62 14 Yellow oil; 89% (1.78 g); 1 H NMR (300 MHz, CDCl 3 ) δ 6.69 (dt, J = 9.9 and 1.5 Hz, 1H), 6.38 (dt, J = 9.9 and 4.8 Hz, 1H), 4.21 (dd, J = 4.8 and 1.5 Hz, 2H), 2.60 (t, J = 7.5 Hz, 2H), 1.75 (qui, J = 7.5 Hz, 2H), 1.37 (sext, J = 7.5 Hz, 2H), 1.20-1.00 (m, 21H), 0.90 (t, J = 7.5 Hz, 3H); 13 C NMR (75 MHz, CDCl 3 ) δ 138.1, 102.1, 65.7, 34.0, 24.9, 17.9, 13.7, 11.9, 7.0; 125 Te NMR (94.6 MHz, CDCl 3 ) δ 298.6.…”