Table 10. Organobase-Catalyzed Intermolecular Heterocyclization of Ynones with Dimeric 2-Mercaptoacetaldehyde106.
| R1 | R2 | yield (%) |
|---|---|---|
| Me | Ph | 75 |
| Ph | Ph | 91 |
| Ph | n-butyl | 91 |
| Ph | SiMe3 | 80 |
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