921595-17-7Relevant academic research and scientific papers
Stabilized germylenes based on dialkanolamines: Synthesis, structure, chemical properties
Huang, Mengmeng,Kireenko, Marina M.,Zaitsev, Kirill V.,Oprunenko, Yuri F.,Churakov, Andrei V.,Howard, Judith A.K.,Zabalov, Maxim V.,Lermontova, Elmira Kh.,Sundermeyer, J?rg,Linder, Thomas,Karlov, Sergey S.,Zaitseva, Galina S.
, p. 66 - 83 (2012/06/18)
A series of novel low valent germanium compounds RN(CHR2CR 1R3O)(CHR4CHR5O)Ge 1-13 (R = Me, Ph, Bn; R1, R2, R3, R4, R5 = H, Me, Ph, (CH2)3, (CH2)4, CH 2(C6H4)) was obtained via the reaction between Ge[N(SiMe3)2]2 and various dialkanolamines. All new compounds were characterized by elemental analysis, 1H and 13C NMR spectroscopy and in several cases by X-ray diffraction analysis (1, 3, 8, 10). The compounds 1, 3, 8 are dimeric in the solid state due to the formation of intermolecular Ge-O bonds, the complex 10 is monomeric, all compounds possess a transannular Ge-N bond. The reactivity of the germylenes synthesized was investigated in reactions of oxidative insertion (with halogenation reagents, MeI, disulfides), [1 + 4]-cycloaddition, oxidation and in reactions with water and acetic anhydride. Some reactions were investigated by DFT calculations.
The transannular interaction germanium-nitrogen in germocanes: The influence of substituents
Lermontova, Elmira Kh.,Selina, Anastasia A.,Karlov, Sergey S.,Churakov, Andrei V.,Howard, Judith A. K.,et al.
, p. 5710 - 5724 (2008/10/09)
The reaction of RN(CH2CH2OH)CHR1CR2R 3OH (1-8) with a stoichiometric amount of tetrachloro(bromo)germane leads to the corresponding RN(CH2CH2O)(CHR1CR2R 3O)GeHal2 (9-21). Difluorenylgermocane 22 was prepared by treatment of diethoxydifluorenylgermane with N-methyldiethanolamine. Different dialkanolamines were found to be successive precursors of dimethylgermocanes, RN(CH2CH2O)(CHR1CR2R 3O)GeMe2 (23-26). The chemical properties of simple and easy to access germocanes RN(CH2CH2O)2GeX2 [X = OH, Br (28), Cl (29)] were studied and the difluoro (27), haloalkoxy(30-32), and dialkoxy (33, 34) derivatives were prepared. The structure s of the compounds 16, 20-22, and 26 were confirmed by X-ray diffractionand the structural features in solution of 23 and 26 were studied by NM R spectroscopy (NOEs). The relationship between the nature of substituents at different positions of the germocane skeleton and the strength of the intramolecular Ge ← N bond is discussed.
