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Alkynes carbalumination

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]

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]

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 Alkynes carbalumination is mentioned: [Pg.275]    [Pg.154]    [Pg.166]    [Pg.225]    [Pg.227]    [Pg.603]    [Pg.607]    [Pg.626]    [Pg.153]    [Pg.165]    [Pg.172]    [Pg.212]    [Pg.421]    [Pg.103]   
See also in sourсe #XX -- [ Pg.2 , Pg.3 , Pg.3 , Pg.3 , Pg.3 , Pg.3 , Pg.3 , Pg.4 , Pg.5 , Pg.5 , Pg.5 , Pg.5 , Pg.5 , Pg.5 , Pg.10 ]

See also in sourсe #XX -- [ Pg.2 , Pg.3 , Pg.3 , Pg.3 , Pg.3 , Pg.3 , Pg.3 , Pg.5 , Pg.5 , Pg.5 , Pg.5 , Pg.5 , Pg.54 ]



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Carbalumination

Carbalumination of alkynes

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