Fluorous phase-transfer activation of catalysts: application of a new rate-enhancement strategy to alkene metathesis

Literature Information

Publication Date 2006-05-17
DOI 10.1039/B602428A
Impact Factor 6.222
Authors

Rosenildo Corrêa da Costa, J. A. Gladysz


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Abstract

Reactions of the bis(pyridine) complex (H2IMes)(Py)2(Cl)2Ru(CHPh) and fluorous phosphines P(CH2CH2Rfn)3 (n = a, 6; b, 8; c, 10; Rfn = (CF2)n–1CF3) give (H2IMes)(P(CH2CH2Rfn)3)(Cl)2Ru(CHPh) (2a–c, 64–73%), which are analogs of Grubbs' second generation catalyst and effective alkene metathesis catalysts under organic monophasic and fluorous/organic biphasic conditions. The latter give rate accelerations, which are believed to arise from phase transfer of the dissociated fluorous phosphine.

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