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Gallium alkyl halides

Triflates of aluminum, gallium and boron, which are readily available by the reaction of the corresponding chlorides with triflic acid, are effective Fnedel-Crafis catalysis for alkylation and acylation of aromatic compounds [119, 120] Thus alkylation of toluene with various alkyl halides m the presence of these catalysts proceeds rapidly at room temperature 111 methylene chloride or ni-tromethane Favorable properties of the triflates in comparison with the correspond mg fluorides or chlorides are considerably decreased volatility and higher catalytic activity [120]... [Pg.964]

The action of alkyl halides on elemental germanium in the presence of a copper/gallium catalyst leads to the simultaneous preparation of several or all of the above-mentioned organogermanium halides248 ... [Pg.505]

The transitory existence of alkylcarbonium ions in alkyl halide-Lewis acid halide systems has been inferred from a variety of observations, sueh as vapour-pressure depressions of OHsCl and C2H5CI in the presence of gallium chloride (Brown et al., 1950), the electric conductivities of aluminium chloride in ethyl chloride (Wertyporoch and Firla, 1933) and of alkyl fluorides in boron trifluoride (Olah et al., 1957), as well as the... [Pg.307]

Diarylamines can be A/-alkylated with anhydrides and acyl halides or iV-alkjiated with alkyl halides, alkyl sulfates, and tri- -alkylphosphites. Diphenylamine derivatives of alkyl—aryl gallium, germanium, phosphoms, and silicon are known (17), eg, pentaphenylgermanamine [64653-46-9]. [Pg.243]

Friedel-Crafts Alkylation and Acylation Reactions. Alcohols and alkyl halides react with aromatics in the presence of gallium triflate to give the corresponding alkylated products. Since Ga(OTf)3 does not decompose in the presence of water, alcohols can be used as good alkylating agents. Alkylation of benzene... [Pg.339]

Aluminum alkyls, alkylaluminum halides, and alkylalu-minum hydrides strongly associate in solution and in the solid state.The association of trialkylaluminum compounds is in stark contrast to the monomeric nature of trialkylboron see Boron Organoboranei) and trialkylgallium see Gallium Organometallic Chemistrj compounds. [Pg.149]

See other pages where Gallium alkyl halides is mentioned: [Pg.143]    [Pg.181]    [Pg.325]    [Pg.735]    [Pg.1379]    [Pg.1388]    [Pg.1397]    [Pg.1397]    [Pg.66]    [Pg.72]    [Pg.26]    [Pg.161]    [Pg.114]    [Pg.95]    [Pg.1378]    [Pg.1387]    [Pg.1396]    [Pg.1396]    [Pg.320]    [Pg.202]    [Pg.135]    [Pg.106]    [Pg.18]    [Pg.297]    [Pg.367]    [Pg.10]    [Pg.170]    [Pg.190]    [Pg.136]    [Pg.173]    [Pg.173]    [Pg.1398]    [Pg.269]    [Pg.148]    [Pg.295]    [Pg.25]    [Pg.315]    [Pg.1397]   
See also in sourсe #XX -- [ Pg.2 , Pg.2 , Pg.4 , Pg.10 , Pg.14 ]

See also in sourсe #XX -- [ Pg.2 , Pg.2 , Pg.4 , Pg.10 ]

See also in sourсe #XX -- [ Pg.22 , Pg.107 , Pg.132 ]



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Gallium halides

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