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Carbalumination of alkynes

Intramolecular carbalumination of alkynes is observed with the dimeric diphenyl-(phenylethynyl)aluminum. The structures of such compounds are in accord with the assumption of intermediate n-complex formation between the C=C bond and Al. Carbalumination is followed by exchange, electrophilic attack at the C=C bond and a... [Pg.225]

Carbalumination of disubstituted alkynes is even more difficult because it occurs only at high T. This leads to further reactions of the products initially formed. Thus, treatment of diphenylacetylene with EtjAl leads to the cis addition product ... [Pg.224]

Although alkynes and alkenes do not form detectable amounts of complex with aluminum alkyls, various a,)8-unsaturated ketones and anils do form such complexes. Such systems, upon heating, do undergo 1,4-carbalumination [Eqs. (45) and (46)]. The rearrangements of com-... [Pg.102]

See other pages where Carbalumination of alkynes is mentioned: [Pg.607]    [Pg.626]    [Pg.212]    [Pg.421]    [Pg.103]    [Pg.607]    [Pg.626]    [Pg.212]    [Pg.421]    [Pg.103]    [Pg.275]    [Pg.166]    [Pg.225]    [Pg.603]    [Pg.165]    [Pg.172]    [Pg.154]    [Pg.153]   
See also in sourсe #XX -- [ Pg.2 , Pg.3 , Pg.3 , Pg.4 , Pg.5 , Pg.5 , Pg.5 , Pg.10 , Pg.53 , Pg.53 , Pg.533 ]

See also in sourсe #XX -- [ Pg.2 , Pg.3 , Pg.3 , Pg.3 , Pg.4 , Pg.5 , Pg.5 , Pg.5 , Pg.5 , Pg.5 , Pg.33 , Pg.53 ]



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Alkynes carbalumination

Carbalumination

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