Self-Assembly of m-Diethynylbenzene Macrocycles having Exo-Annular Chiral Side Chains

1.27 (d, J=6.3 Hz, 3H), 1.133 (s, 18H), 1.129 (s, 3H); 13 C NMR (67.5 MHz, CDCl3, 30 °C) δ = 164.8 (q), 139.2 (t), 133.0 (t), 132.5 (t), 130.7 (q), 124.3 (q), 122.8 (q), 104.7 (q), 93.1 (q), 81.8 (t), 78.7 (q), 73.8 (t), 72.0 (s), 70.9 (s), 70.6 (s), 68.8 (s), 68.2 (s), 59.0 (p), 18.7 (p), 17.2 (p), 11.4 (t); IR (neat): ν = 3304, 3246, 3070, 2942, 2866, 2155, 1728, 1589, 1462, 1435, 1313, 1220, 1113, 998, 960, 898, 883, 768, 680 cm −1 ; MS (MALDI- TOF) m/z 509.3 (M + +Na), 525.3 (M + +K).