## 3 Experimental Section
### Synthesis of Compounds **11-14** from Styrene Derivatives and 1H-Indene  
_3-Phenyl-2H,3H-[1,4]thiazol[2,3,4-il]quinolin-4-ium chloride_ (**11**). A solution of sulfuryl chloride (0.042 g, 0.31 mmol) in methylene chloride (10 mL) was added dropwise to a solution of di(8-quinolinyl) disulfide (0.100 g, 0.31 mmol) in methylene chloride (10 mL), and the mixture was stirred for 10 min at room temperature. A solution of styrene (0.065 g, 0.62 mmol) in methylene chloride (5 mL) was added dropwise, and the reaction mixture was stirred for 24 h at room temperature. The mixture was filtered, and the solvent was removed by rotary evaporator. The residue was washed with cold hexane and dried in vacuum, giving the product (0.18 g, 97% yield) in the form of a light-yellow oil. \({}^{1}\)H-NMR (400 MHz, D\({}_{2}\)O): 8 3.78 (dd, \(J\) = 14.3, 3.5 Hz, 1H, SCH\({}_{2}\)), 3.98 (dd, \(J\) = 14.3, 3.0 Hz, 1H, SCH\({}_{2}\)), 6.79-6.83 (m, 1H, NCH), 6.89-6.96 (m, 2H, Ar), 7.36-7.44 (m, 3H, Ar), 7.91-7.95 (m, 1H, Hquino), 8.08-8.13 (m, 2H, Hquino), 8.23-8.25 (m, 1H, Hquino), 9.21-9.27 (m, 2H, Hquino). \({}^{13}\)C-NMR (101 MHz, D\({}_{2}\)O): 8 29.77 (SCH\({}_{2}\)), 69.32 (NCH), 121.99, 125.76, 126.34, 128.05, 129.14, 129.23, 129.32, 129.45, 133.91, 134.12, 136.95, 149.62, 150.31. Anal. Calcd for C\({}_{17}\)H\({}_{14}\)CNIS: C 68.10, H 4.71, Cl 11.82, N 4.67, S 10.70. Found: C 67.81, H 4.53, Cl 12.01, N 4.48, S 10.48. _7 aH,8H,12 BH-Inden[1,2,7:5,6][1,4]thiazol[2,3,4-il]quinolin-13-ium chloride_ (**12**). A solution of sulfuryl chloride (0.071 g, 0.53 mmol) in methylene chloride (10 mL) was added dropwise to a solution of di(8-quinolinyl) disulfide (0.169 g, 0.53 mmol) in methylene chloride (10 mL), and the mixture was stirred for 10 min at room temperature. A solution of 1\(H\)-indene (0.140 g, 1.06 mmol) in methylene chloride (10 mL) was added dropwise, and the reaction mixture was stirred for 65 h at room temperature. The mixture was filtered, and the solvent was removed by rotary evaporator. The residue was washed with cold hexane and dried in vacuum, giving the product (0.266 g, 80% yield) in the form of a yellow powder, mp 158-160 \({}^{\circ}\)C.  
\({}^{1}\)H-NMR (400 MHz, D\({}_{2}\)O): \(\delta\) 3.07 (d, \(J\) = 16.8 Hz, 11, CH\({}_{2}\)), 3.61 (d, \(J\) = 16.8 Hz, 11, CH\({}_{2}\)), 4.52 (d, \(J\) = 4.2 Hz, 1H, SCH), 6.71 (s, 11, NCH), 6.77-6.79 (m, 1H, Ar), 7.13-7.17 (m, 1H, Ar), 7.33-7.36 (m, 1H, Ar), 7.45-7.46 (m, 1H, Ar), 7.68-7.72 (m, 1H, H\({}_{\rm quino}\)), 7.81-7.83 (m, 1H, H\({}_{\rm quino}\)), 8.04-8.06 (m, 1H, H\({}_{\rm quino}\)), 8.19-8.22 (m, 1H, H\({}_{\rm quino}\)), 9.20-9.22 (m, 1H, H\({}_{\rm quino}\)), 9.43-9.44 (m, 1H, H\({}_{\rm quino}\)). \({}^{13}\)C-NMR (101 MHz, D\({}_{2}\)O): \(\delta\) 36.27 (CH\({}_{2}\)), 39.61 (SCH), 72.47 (NCH), 121.6, 122.27, 125.14, 126.38, 127.22, 127.33, 129.12, 129.49, 131.04, 132.50, 138.22, 138.68, 138.71, 149.35, 149.81. Anal. Calcd for C\({}_{18}\)H\({}_{14}\)NClS: C 69.33, H 4.53, N 4.49, Cl 11.37, S 10.28. Found: C 69.46, H 4.68, N 4.63, Cl 11.81, S 10.56. _3-(4-Methylphenyl)-2H,3H-[1,4]thiazol[2,3,4-ij]quinolin-4-ium chloride_ (**13**). A solution of sulfuryl chloride (0.097 g, 0.71 mmol) in methylene chloride (10 mL) was added dropwise to a solution of di(8-quinolinyl) disulfide (0.230 g, 0.71 mmol) in methylene chloride (10 mL), and the mixture was stirred for 10 min at room temperature. A solution of 4-methylstyrene (0.168 g, 1.42 mmol) in methylene chloride (10 mL) was added dropwise, and the reaction mixture wasstirred for 24 h at room temperature. The mixture was filtered, and the solvent was removed by rotary evaporator.