Ruthenium porphyrin bound to a Merrifield resin as heterogeneous catalyst for the cyclooligomerization of arylethynes

Ruthenium meso-tetraphenylporphyrin was bound to a solid support, the Merrifield resin, and used in the cyclooligomerization of arylethynes, obtaining high yields and selectivities in the final products with a complete recycling of the catalyst.