In one embodiment, the present application discloses mixtures comprising (a) water in an amount of at least 1% wt/wt of the mixture; (b) a transition metal catalyst; and (c) one or more solubilizing agents; and methods for using such mixtures for performing transition metal mediated bond formation reactions.
Rate Enhanced Olefin Cross-Metathesis Reactions: The Copper Iodide Effect
作者:Karl Voigtritter、Subir Ghorai、Bruce H. Lipshutz
DOI:10.1021/jo200360s
日期:2011.6.3
Copper iodide has been shown to be an effective cocatalyst for the olefin cross-metathesis reaction. In particular, it has both a catalyst stabilizing effect due to iodide ion, as well as copper(I)-based phosphine-scavenging properties that apply to use of the Grubbs-2 catalyst. A variety of Michael acceptors and olefinic partners can be cross-coupled under mild conditions in refluxing diethyl ether
PQS-2: ring-closing- and cross-metathesis reactions on lipophilic substrates; in water only at room temperature, with in-flask catalyst recycling
作者:Bruce H. Lipshutz、Subir Ghorai
DOI:10.1016/j.tet.2009.11.010
日期:2010.1
(PQS-2) of the recently introduced PQS is described. It forms catalytic nanomicellar reactors in water that provide the medium for highly reactive Ru carbene catalysts to effect both ring closing metathesis to trisubstituted olefins and cross-metathesis reactions at roomtemperature. The catalyst can be recycled without removal from the reaction vessel.
Olefin Cross-Metathesis Reactions at Room Temperature Using the Nonionic Amphiphile “PTS”: Just Add Water
作者:Bruce H. Lipshutz、Grant T. Aguinaldo、Subir Ghorai、Karl Voigtritter
DOI:10.1021/ol800028x
日期:2008.4.1
cross-metathesis reactions in water, involving water-insoluble substrates, at roomtemperature and using commercially available catalysts are reported. The key to success is to include small percentages of the nonionic, vitamin E-based amphiphile "PTS". The nanometermicelles formed accommodate water-insoluble substrates, along with a readily available Ru-based metathesis catalyst. Reactions proceed
In one embodiment, the present application discloses mixtures comprising (a) water in an amount of at least 1% wt/wt of the mixture; (b) a transition metal catalyst; and (c) one or more solubilizing agents; and methods for using such mixtures for performing transition metal mediated bond formation reactions.