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Aryl-alkynyl coupling reactions

Figure 8.3 Schematic presentation of the mechanism for the aryl-alkynyl coupling reaction... Figure 8.3 Schematic presentation of the mechanism for the aryl-alkynyl coupling reaction...
In addition to aryl alkynyl coupling reactions involving dihaloarenes and acetylenes or dialkynylarenes which lead to poly(arylene acetylene)s, it is worth noting that these polymers have also been obtained by the Pd(0)-catalysed heteropolycondensation of dialkoxy-substituted dibromoarenes with bis(tribu-tylstannyl)acetylenes [122]. [Pg.413]

Aryl-AIkyne Coupling Reactions Alkynyl-de-halogenation, and so on Arl + RC=CCu... [Pg.903]

Hydrometallation-cross-coupling and carbometallation-cross-coupling tandem protocols and other alkenyl-aryl, alkenyl-alkenyl, and alkenyl-alkynyl coupling reactions double metal catalysis... [Pg.285]

Aryl-Alkynyl Coupling (Sonogashira Reaction) Reaction Conditions and Catalysts... [Pg.203]

Alkyl- and aryl-pyridazines can be prepared by cross-coupling reactions between chloropyridazines and Grignard reagents in the presence of nickel-phosphine complexes as catalysts. Dichloro[l,2-bis(diphenylphosphino)propane]nickel is used for alkylation and dichloro[l,2-bis(diphenylphosphino)ethane]nickel for arylation (78CPB2550). 3-Alkynyl-pyridazines and their A-oxides are prepared from 3-chloropyridazines and their A-oxides and alkynes using a Pd(PPh3)Cl2-Cu complex and triethylamine (78H(9)1397). [Pg.28]

Palladium And/Or Copper-Mediated Cross-Coupling Reactions Between 1-Alkynes And Vinyl, Aryl, 1-Alkynyl, 1,2-Propadienyl, Propargyl And Allylic Halides Or Related Compounds. A Review, Rossi. R. Carpita, A. Beilina, F. Org. Prep. Proceed. Int., 1995, 27, 129... [Pg.22]

Aryl chlorides can also be used as coupling partners for azabismocine reagents 2. In the coupling reaction with aryl chlorides, Pd(PPh3)4 was not an efficient catalyst, and Pd(OAc)2/l,l,-bis(diphenylphosphino)ferrocene (dppf) combination was found to be effective [54]. Not only the arylation, but also methylation, alkenylation and alkynylation reactions can be accomplished by using the corresponding bismuth compounds (Scheme 35). The addition of CsF improved the product yields. However, electron-rich aryl chlorides were unable to be coupled efficiently under these reaction conditions. [Pg.215]

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See also in sourсe #XX -- [ Pg.11 ]

See also in sourсe #XX -- [ Pg.11 ]



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Alkynyl coupling

Alkynylation alkynyl-aryl coupling

Aryl coupling

Aryl coupling reactions

Aryl-alkynyl

Aryl-alkynyl coupling

Cross-coupling reactions with alkynyl, alkenyl, and aryl halides

Palladium-catalyzed alkynyl-aryl coupling reactions

Reactions alkynylation

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