Organouranium complexes

Hydroamination of terminal alkynes with primary amines has been performed using organoactinides as catalysts [301, 302]. The organouranium complex Cp 2UMe catalyzes the regioselective formation of imines in fair to high yields (Eq. 4.82). 

The X-ray structure of 37 confirms the interligand C—C coupling. Cramer et al. have reported a coupling reaction that is believed to be quite similar to Eq. (8) using an organouranium complex [Eq. (10)] (47). The... 

Scheme 1 Synthetic routes for the preparation of tiniti-organouranium complexes...

The organoactinide complexes Cp 2AnR2 (An = Th, U R = Me, NHR R = alkyl) and the bridge complexes 3-6 were found to be excellent precatalysts for the intermolecular hydroamination of terminal aliphatic and aromatic alkynes in the presence of primary aliphatic amines to yield the corresponding imido compounds [56, 99]. The reactivity exhibited for the thorium complexes was different, depending on the alkynes, from that for organouranium complexes. 

Catalytic Reduction of Azides and Hydrazines by High-Valent Organouranium Complexes... 

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