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Beilstein J. Org. Chem. 2013, 9, 1781–1790, doi:10.3762/bjoc.9.207
Graphical Abstract
Scheme 1: Formation of gem-dibromoolefin 3 from the reaction of carbon tetrabromide and triphenylphosphine as...
Scheme 2: Formation of the triphenylphosphine monoliths.
Figure 1: a. An unfunctionalised triphenylphosphine monolith; b. Monolith after functionalisation with carbon...
Scheme 3: Functionalising the triphenylphosphine monolith to give the active Ramirez monolith using carbon te...
Scheme 4: Flow synthesis of gem-dibromoolefins using the functionalised triphenylphosphine monolith.
Scheme 5: Flow synthesis of bromides from the corresponding alcohols using the functionalised triphenylphosph...
Scheme 6: Mechanisms for the Ramirez and Appel reactions [41,59].
Beilstein J. Org. Chem. 2011, 7, 1648–1655, doi:10.3762/bjoc.7.194
Scheme 1: The two proposed mechanistic pathways for the Appel reaction.
Scheme 2: Functionalisation of the triphenylphosphine monolith by using carbon tetrabromide in a recycling pr...
Figure 1: a. Unfunctionalised triphenylphosphine monolith; b. Monolith after fuctionalisation with carbon tet...
Scheme 3: Flow synthesis of bromides from alcohols by using the functionalised triphenylphosphine monolith.
Figure 2: Linear decrease of the brown decolourisation.