A simple Palladium catalyst system for the efficient cyclotrimerization of acetylenes


A cyclotrimerization of 4-R-phenylacetylenes variously substituted is performed using Pd(OAc)2 and Ph3P as catalytic system. The substituted 1,3,5-triphenylbenzenes and 1,2,4-triphenylbenzenes iso-lated were characterized by NMR spectroscopy and a reaction mechanism is also proposed.

DOI Code: 10.1285/i9788883050886p105

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