Table 2 Homodimerization, RCAM, and cyclooligomerization reactions of propynyl substrates either under argon or air conditiona.

From: Highly active alkyne metathesis catalysts operating under open air condition

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  1. aReaction conditions: CCl4 was used as the solvent. 3 mol% catalyst was used for entries 1–9 and 2 mol% catalyst was used for entries 10–12. 150 mg MS 5 Å/0.1 mmol substrate was added in all entries except entry 12.
  2. bThe yields were estimated based on the proton signal integrations in the crude product 1H NMR spectra.
  3. cThe isolated yield obtained after column chromatography purification.
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