850131-83-8Relevant academic research and scientific papers
β-diketiminate gallium amides: Useful synthons in gallium chemistry
Solis-Ibarra, Diego,Gomora-Figueroa, A. Paulina,Zavala-Segovia, Nieves,Jancik, Vojtech
, p. 4564 - 4571 (2010/03/25)
The facile preparation of ss-diketiminate gallium amides with general formulas of either LGa(NHR)2 (L = [HC(C(Me)N(Ar)J2]-, Ar = 2,6-iPr2C6H3; R = Et (1), iPr (2), nBu (3), Ph (4)} or LGa(NHR)Cl [R = tBu (5); Bt (6)] was accomplished by the reaction of LGaCl2 with the lithium salt of the corresponding amine in 1:2 (1-4) or 1:1 (5, 6) molar ratios. Compounds 1-6 are useful synthons for further synthesis, as the amide substituents are excellent leaving groups, and the resulting amines can be cleanly and easily removed from the reaction matrix. To demonstrate this, compounds 1 and 5 were treated with ethanol, leading to the alcoholysis products LGa(OEt)2 (8) and LGa(OEt)Cl (9), respectively. Furthermore, LGa(OH)2 can be obtained in an almost quantitative yield from the hydrolysis of compounds 1-4. Additionally, the aluminum analogue of 1 - LAl(NHEt)2 (7) - was obtained to prove that the method is also suitable for other metals. Compounds 1-9 were characterized by common spectroscopic methods, and compounds 1-8 were also characterized by X-ray singlecrystal diffraction Wiley-VCH Verlag GmbH & Co. KGaA.
Preparation of monomeric LGa(NH2)2 and of LGa(OH)2 in the presence of a n-heterocyclic carbene as HCl acceptor
Jancik, Vojtech,Pineda, Leslie W.,Stueckl, A. Claudia,Roesky, Herbert W.,Herbst-Irmer, Regine
, p. 1511 - 1515 (2008/10/09)
The reactions of LGaCl2 (L = HC[C(Me)N(Ar)l2, Ar = 2,6-iPr2C6H3) with NH3 and H 2O, respectively, in the presence of a 1,3-bis-tert-butylimidazol-2- ylidene (N-heterocyclic carbene) as acceptor for the HCl lead to unique species of composition LGa(NH2)2 and LGa(OH)2 in high yields under mild conditions. LGa(NH2)2 is the first known monomeric diamide of gallium.
