“…With introduction of the new generations of highly active and chemoselective Ru metathesis catalysts endowed with high tolerance towards many functionalities and good stability in the presence of air, moisture and various solvents, including water-containing systems [231,232,233,234,235,236,237,238,239], the diversification of metathesis reactions experienced a strong impetus [240,241,242,243,244,245]. Among metathesis reactions, cross-metathesis (CM) [246,247,248,249] and ring-closing metathesis (RCM) [250,251,252,253,254] have become the most encountered strategies for the synthesis of linear and branched, or carbocyclic and heterocyclic compounds. Ru-catalyzed enyne metathesis (EYRCM) provided an elegant and productive way to obtain small, medium and large cyclic molecules [255].…”