Pyridine and phosphine reactions with [CPh3][B(C6F5)4] |
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Authors: | Lourdes Cabrera |
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Affiliation: | Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset, Windsor, Ont., Canada N9B 3P4 |
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Abstract: | Trityl borate salts [4-RPyCPh3][B(C6F5)4] (R = H 1, tBu 2, Et 3, NMe24) and [R3PCPh3][B(C6F5)4] (R = Me 5, nBu 6, Ph[1] 7, p-MeC6H48) are readily prepared via equimolar reaction of the appropriate pyridine or phosphine and trityl borate [CPh3][B(C6F5)4]. The analogous reactions of PiPr3 affords the product [(p-iPr3P-C6H4)Ph2CH][B(C6F5)4] (9) while the corresponding reactions of Cy3P and tBu3P gave the cyclohexadienyl derivatives [(p-R3PC6H5)CPh2][B(C6F5)4] (R = Cy 10, tBu 11). X-ray structures of 5 and 9 are reported. |
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Keywords: | Trityl borate Lewis acid-base interaction Nucleophilic aromatic substitution |
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