Insertion into main group and post-transition metal amides

2 Insertion into Main Group and Post-Transition Metal Amides 

In early work, Inoue and Yokoo [121] found that carbon dioxide insertion into the Al-N bond of Et2Al-NEt2 was accelerated by tertiary amines such as, for instance, 1-methyl-imidazole, N-methylbenzimidazole, or pyridine. The role of the base was explained by taking into account that 

A picture of the mechanistic features characterizing the insertion reactions of carbon dioxide in a few of these systems has been provided by means of computational studies. 

The mechanism of CO2 fixation by alkylmagnesium amides and magnesium bisamides has been analyzed by Himmel [132] with the aid of quantum chemical calculations relying on pure DFT (BP86) 

As already emphasized for transition metal carbamates, the O2C-N bond of the carbamate moiety of these systems is somewhat labile, and the carbamate group undergoes CO2 exchange processes easily. 

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See also in sourсe #XX -- [ , ]

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