“…Calc. for C 12 H 14 S 2 : M, 222.0537); m/z 222 (8%, M ϩ ), 193 (100, M Ϫ Et), 109 (14, C 6 H 5 S) and 83 (78, C 4 H 3 S); λ max /nm 232infl (3.88); ν max /cm Ϫ1 1589 (aromatic C᎐ ᎐ C); δ H 0.86 (3H, t, J 8, CH 2 CH 3 ), 1.76 (3H, s, CH 3 ), 2.19 (2H, q, J 8, CH 2 Me),6.82 (2H, d, J 3, H-3),6.88 (2H, dd, J 3 and 5, H-4), and 7.12 (2H, d, J 5, H-5).Next came 2,5-bis[2-(2-thienyl)butan-2-yl]thiophene 2 (890 mg, 2.5 mmol, 9.9%) (Found: M ϩ , 360.1053. C 20 H 24 S 3 requires M, 360.1040); m/z 360 (19%, M ϩ ), 331 (100, M Ϫ Et), 302 (47, 331 Ϫ Et), 287 (5, 302 Ϫ Me), 218 (9, C 12 H 10 S 2 ), 109 (27, C 6 H 5 S), and 97 (15, C 5 H 5 S); λ max /nm 235 (log ε 4.26); δ Et) ϩ , 607.1655.…”