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Coupling reactions Heck reaction

Aryl coupling reactions" Heck reaction Alkene Arylalkene 6 71 71-83... [Pg.2127]

Miscellaneous coupling reactions. Heck reaction and subsequent intramolecular Michael reaction are probably involved in the aminoarylation of 3-cyclohexenones/ ... [Pg.464]

Aryl hydrazide-based linker 79 was developed as a traceless handle that released products under mild oxidative conditions (Scheme 42) [91]. Polymeric bound p-iodophenylhydrazide was subjected to a variety of Pd°-catalyzed coupling reactions (Heck, Suzuki, Sonogashira, and Stille). Oxidation with Cu(OAc)2 in MeOH and pyridine released the final products in 50-96% yield. [Pg.210]

Supported ultra small palladium on magnetic nanopartides used as catalysts for Suzuki cross-coupling and Heck reactions. Advanced Synthesis and Catalysis, 349, 1917-1922. [Pg.87]

The synthetic potential of palladium-mediated cross-coupling reactions (Heck, Suzuki, Stille, Sonogashira, Buchwald-Hartwig) led to the search for a practical synthesis of p-[ F]fluoroiodo- and p-[ F]fluorobromobenzene. p-[ F]Fluoroio-dobenzene (G, X = iodine) can be obtained in poor yield from p F]fluoride and a trimethylammonium precursor (P7). p-p F]Fluorobromobenzene can be prepared in a more reproducible way from 5-bromo-2-nitrobenzaldehyde (radiochemical yields > 70%). The synthesis involves a two-step procedure radiofluorination (F for NO2 substitution), then a catalysed decarbonylation [190,191]. Also very efficient is the one-step reaction of p F]fluoride with a suitable diaryliodonium salt (P6) giving >70% radiochemical yield [192-194]. [Pg.38]

Heck-, Suzuki- and Stille-type Couplings - The Heck reaction, palladium-catalysed coupling of aryl or vinyl halides with alkenes or alkynes, is an extremely useful synthetic method. Only recently have Heck reactions been performed in aqueous media, probably due to the perception that water must be carefully... [Pg.166]

Tandem Radical Cyclization/Cross-Coupling or Heck Reactions... [Pg.257]

Aldol reaction, oxidation (alcohol —> ketone), aromatie metalation (nBuLi), Pd(0)-mediated coupling reactions (Heck, Stille, Suzuki). [Pg.214]

The oxidative addition of organic electrophiles (halides, sulfonates, and related activated compounds) to palladium(O) is the first step in the cross-coupling and Heck reactions. Much work has been done on the mechanisms of the oxidative addition reactions of aryl and alkenyl halides and triflates (C(sp )-X electrophiles) [65], the most common organic electrophiles in cross-coupling reactions. [Pg.3]

See other pages where Coupling reactions Heck reaction is mentioned: [Pg.66]    [Pg.127]    [Pg.45]    [Pg.66]    [Pg.127]    [Pg.45]    [Pg.222]    [Pg.236]    [Pg.300]    [Pg.301]    [Pg.160]    [Pg.504]    [Pg.189]    [Pg.511]    [Pg.513]    [Pg.515]    [Pg.517]    [Pg.519]    [Pg.521]    [Pg.523]    [Pg.768]    [Pg.337]    [Pg.102]    [Pg.144]    [Pg.510]    [Pg.89]    [Pg.4]    [Pg.289]    [Pg.318]    [Pg.144]    [Pg.195]    [Pg.157]    [Pg.157]    [Pg.30]   
See also in sourсe #XX -- [ Pg.542 , Pg.545 , Pg.545 , Pg.546 , Pg.547 ]

See also in sourсe #XX -- [ Pg.36 , Pg.38 , Pg.39 ]



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Heck coupling reactions

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