A novel route to 2-alkoxy/aryloxy-4-arylthiophenes 4a-k and the corresponding 3,4-annulated thiophene 7 has been developed by subjecting the respective acylketene O,S-acetals 1a-k and 6 to Simmons-Smith reaction conditions (zinc-copper/diiodomethane).
通过将各自的酰基
乙烯 O,S-
缩醛 1a-k 和 6 置于 Simmons-Smith 反应条件(
锌-
铜/
二碘甲烷)下,开发出了一种制备 2-烷氧基/芳氧基-4-芳基
噻吩 4a-k 和相应的 3,4-annulated
噻吩 7 的新方法。