Abstract: A compound represented by a formula 1 shown below. In the formula 1, each of R1 and R2 independently represents a group selected from the group consisting of a hydrogen atom and substituents composed of C, H and/or X (wherein X represents a hetero atom), and each of Z1 and Z2 independently represents a group selected from the group consisting of aromatic substituents composed of C and H, aromatic substituents composed of C, H and X (wherein X represents a hetero atom), groups containing an aromatic ring and a double-bonded and/or triple-bonded conjugated structure composed of C and H, and groups containing an aromatic ring and a double-bonded and/or triple-bonded conjugated structure composed of C, H and/or X (wherein X represents a hetero atom).

Abstract: A compound represented by a formula 1 shown below. In the formula 1, each of R1 and R2 independently represents a group selected from the group consisting of a hydrogen atom and substituents composed of C, H and/or X (wherein X represents a hetero atom), and each of Z1 and Z2 independently represents a group selected from the group consisting of aromatic substituents composed of C and H, aromatic substituents composed of C, H and X (wherein X represents a hetero atom), groups containing an aromatic ring and a double-bonded and/or triple-bonded conjugated structure composed of C and H, and groups containing an aromatic ring and a double-bonded and/or triple-bonded conjugated structure composed of C, H and/or X (wherein X represents a hetero atom).

Abstract: Disclosed is a process for production of a substituted benzene, which comprises intramolecularly and/or intermolecularly trimerizing a triple bond in an alkyne in the presence of a transition metal catalyst to yield a substituted benzene compound. In the process, the transition metal catalyst is prepared from an iminomethylpyridine represented by the formula (1) or (2), a transition metal salt or a hydrate thereof, and a reducing agent in a reaction system and is used to perform the trimerization. The process can be used in any one of the intramolecular cyclization of a triyne compound, the cyclization of a diyne compound or an alkyne compound and the intermolecular cyclization of three molecules of an alkyne compound, is excellent in economic effectiveness and operability, and is practically advantageous.