It has been well known that oligomerization of acetylene such as cyclotrimerization leading to benzene derivatives or linear dimerization of terminal alkynes leading to ene–yne derivatives is catalyzed by a variety of metal complexes eg, cobalt, rhodium, zirconium, tantalum [1]. Catalytic hydrodimerization of acetylene leading to 1,3-diene, however, has not so far been reported to the best of our knowledge; only several examples of stoichiometric preparation of ...
