Table 11. Tandem Reaction of Sonogashira Coupling and Thiol-yne Addition to Afford Trisubstituted Thiophenes107.
| R1 | R2 | yield (%) |
|---|---|---|
| p-MeOC6H4 | Ph | 97 |
| p-NCC6H4 | p-(CH3)3C6H4 | 91 |
| 2-thienyl | Ph | 90 |
| p-MeC6H4 | ferrocenyl | 91 |
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