Reaction of 1-germatranol hydrate with carboxylic acids
作者:V. P. Baryshok、N. T. Z. Le
DOI:10.1134/s1070363215120154
日期:2015.12
Reaction of 1-germatranol hydrate with carboxylicacids RCOOH (R = ClCH2, PhCH=CH, Ph, 2-FC6H4, 3-BrC6H4, 3-HOC6H4, 3-EtOC6H4) in protic (CH3OH, iso-C5H11OH) and aprotic polar solvent (CH3CN) is studied. 1-Acyloxygermatranes RC(O)OGe(OCHin2}CHin2})in3}N are formed in yields from 11 to ~100 % depending on the nature of the acid, solvent, duration of the process and the method of its completion. The
作者:E. A. Chernyshev、S. P. Knyazev、V. N. Kirin、I. M. Vasilev、N. V. Alekseev
DOI:10.1023/b:rugc.0000025170.06493.f9
日期:2004.1
In stabilization of the endo configuration of silatranes and germatranes, a major role is played not only by the Si (or Ge) and N atoms, but also by oxygen and other atoms of the atrane core, which is manifested in molecular orbital parameters. Calculation of the system of interacting methyltrimethoxysilane and trimethylamine shows that the energy of the system grows as the distance between the Si and N atoms is decreased from 5 to 2 Angstrom. The Si-N interaction in methylsilatrane, according to the calculations and precision X-ray diffraction studies, is the interaction of filled electronic shells and is electrostatic in nature. Analysis of the thermodynamic functions of formation of 1-methyl- and 1-hydroxysilatranes and -germatranes reveals an increase in the enthalpy and the decisive contribution of the entropy factors to stabilization of the reaction products. A H-1 NMR study of ethylgermatrane in aqueous solution revealed its equilibrium with the hydrolyzed form. The transition state in the first step of hydrolysis of methyl- and hydroxysilatranes and -germatranes was studied by methods of quantum chemistry (AM1, PM3; basis sets STO-3G, 6-31G, 6-31G*, 6-31G**; B3LYP method).
1-Acyloxygermatranes
作者:V. P. Baryshok、L. N. Thuy Zang、M. G. Voronkov
DOI:10.1134/s1070363213080045
日期:2013.8
A one-step method for the synthesis of 1-acyloxygermatranes RC(O)OGe(OCH2CH2)(3)N in the reaction of germanium dioxide with triethanolamine and a carboxylic acid was developed. 1-Acyloxygermatranes, including those containing biologically active acyloxy groups (R = 2-MeC6H4CH2OCH2, C6H5, 2-HOC6H4), were obtained with a 82-96.5% yield.
BOPOHKOB, M. G.;OVCHINNIKOVA, Z. A.;ROMANENKO, L. S.;BARYSHOK, V. P., METALLOORGAN. XIMIYA, 2,(1989) N, S. 1308-1310
作者:BOPOHKOB, M. G.、OVCHINNIKOVA, Z. A.、ROMANENKO, L. S.、BARYSHOK, V. P.
DOI:——
日期:——
Synthesis of 1-germatranol and its C-substituted derivatives
作者:M. G. Voronkov、Z. A. Ovchinnikova、V. P. Baryshok