Collect. Czech. Chem. Commun. 2006, 71, 302-310

Camphor-Palladium Complexes as Catalysts for Cyclization of Alkynes

M. Fernanda N. N. Carvalhoa,*, M. Teresa Duartea and Rudolf Herrmannb

a Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Av. Rovisco Pais 1049-001 Lisboa, Portugal
b Institut für Physik, Universität Augsburg, Universitätsstr. 1, 86159 Augsburg, Germany


Catalytic properties of the camphor-derived complexes trans-[PdCl2(L1)2], R = Me2N (1), i-Pr (3), C6H5 (4), in PhC≡CMe cyclotrimerization are highly dependent on the characteristics of the R group. Their activity decreases in the order 1 > 3 > 4. The effects of geometric and/or electronic parameters on the catalytic activity of the complexes are evaluated on the basis of X-ray and electrochemical data.

Keywords: Alkyne; Palladium; Catalysis; Camphor; Cyclotrimerization; X-Ray analysis.

References: 14 live references.