The reaction of complex (SIPr)PdCl 2 (TEA) (SIPr = 1,3-bis(2,6-diisopropylphenyl)-2-imidazolidinylidene, TEA = triethylamine) with tertbutylammoniun chloride (TBAC) at room temperature affords the new ionic complex [TBA][(SIPr)PdCl 3 ] in quantitative yield. The activity of this complex as a precatalyst for Heck coupling reactions has been explored. Experimental results and DFT calculations support a plausible anionic Amatore–Jutand-type mechanism for the Heck reaction involving anionic (NHC)-palladium(0) catalytic species.
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Guest et al. (2015) studied this question.
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