Synthesis, characterization and catalytic evaluation in the Heck coupling reactions of S-P-S pincer complexes of the type [Pd{PhP(C6H4-2-S)2}(PAr3)] |
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| Authors: | Valente Gó mez-Bení tez |
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| Affiliation: | Instituto de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, Circuito Exterior, Coyoacán 04510 México DF, Mexico |
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| Abstract: | A series of palladium complexes of the type [Pd(phPS2)(PAr3)] (phPS2) = [PhP(C6H4-2-S)2]2− have been synthesized in good yields and their crystal structures determined. Heck coupling reactions were carried out using the [Pd(phPS2)(PPh3)] (1), [Pd(phPS2){P(C6H4-4-Cl)3}] (2), [Pd(phPS2){P(C6H4-4-F)3}] (3), [Pd(phPS2){P(C6H4-4-CF3)3}] (4), [Pd(phPS2){P(C6H4-4-Me)3}] (5) and [Pd(phPS2){P(C6H4-4-OMe)3}] (6) complexes as catalyst precursors in order to examine the potential effect of the para-substituted triarylphosphines in the reaction of bromobenzene and styrene. |
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| Keywords: | S-P-S pincer complexes Hemilability Heck reaction C-C coupling reactions Triarylphosphines Palladium complexes Crystal structures Catalysis |
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