The cyclooligomerization of arylethynes in ionic liquids catalysed by ruthenium porphyrins: a case of real catalyst recycling

An efficient cyclooligomerization of arylethynes, catalysed by ruthenium(II) porphyrins in environmentally friendly ionic liquids, with an effective recycling of the catalyst and easy isolation of the products is described

Highly selective biaryl formation by the cyclooligomerization of arylethynes catalyzed by rhodium and ruthenium porphyrins

Rhodium and ruthenium porphyrins catalyze the one-pot formation of biaryl derivatives from arylethynes with high selectivity, giving interesting derivatives not easy to obtain using other different methods; the porphyrin catalysts can be recovered and reused after several experiments with no change of activity