Synthesis, X-Ray Structure and Anti-Bacterial Studies of 1,3-Thiazolylpropylsilatranes
摘要:
Syntheses of 1,3-thiazolyl functionalized propylsilatranes were carried out by the transesterification reaction of S-(3-triethoxysilylpropyl)mercaptobenzothiazole with triethanolamine, tris(isopropanol)amine and tris(2-aminoethyl)amine. The structures of the synthesized compounds were established by elemental analysis, IR, (H-1, C-13) NMR spectroscopy, mass spectrometry and explored for thermal stability by thermogravimetric analysis. The structure of S-(3-silatranylpropyl)mercaptobenzothiazole was confirmed by single crystal X-ray diffraction analysis. All the synthesized silatranes were effectively screened for antibacterial activity against Gram-negative (Escherichia coli and Vibrio cholerae) and Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus).
Iridium-Catalyzed Hydrosilylation of Unactivated Alkenes: Scope and Application to Late-Stage Functionalization
摘要:
Highly efficient and general Ir-catalyzed hydrosilylation of unactivated alkenes with excellent anti-Markovnikov regioselectivity was described. A broad scope of hydrosilylated products were synthesized economically and conveniently from commercially or naturally available compounds, which provides versatile valuable precursors for organic and medicinal studies.
Synthesis of adducts from mercury(II) with N and S donor ligands as models of adsorbent materials for the retention of heavy metals
作者:Isabel del Hierro、Isabel Sierra、Damián Pérez-Quintanilla、Fernando Carrillo-Hermosilla、Isabel López-Solera、Mariano Fajardo
DOI:10.1016/s0020-1693(03)00302-5
日期:2003.11
A series of adducts of the type (LL′)HgCl2 have been obtained by the reaction of the corresponding ligand and the mercury salt. (LL′)=bis(3,5-dimethylpyrazol-1-yl)methane (3), 2-(methylthio)pyrazine (4), 2-(methylthio)benzothiazole (5) and four new trialkoxysilane ligands (1a and 1b) and (2a and 2b) with attached 2-mercaptopyridine and 2-mercaptobenzothiazole units. The mercury adducts (6–10), which
Highly efficient and general Ir-catalyzed hydrosilylation of unactivated alkenes with excellent anti-Markovnikov regioselectivity was described. A broad scope of hydrosilylated products were synthesized economically and conveniently from commercially or naturally available compounds, which provides versatile valuable precursors for organic and medicinal studies.
Synthesis, X-Ray Structure and Anti-Bacterial Studies of 1,3-Thiazolylpropylsilatranes
Syntheses of 1,3-thiazolyl functionalized propylsilatranes were carried out by the transesterification reaction of S-(3-triethoxysilylpropyl)mercaptobenzothiazole with triethanolamine, tris(isopropanol)amine and tris(2-aminoethyl)amine. The structures of the synthesized compounds were established by elemental analysis, IR, (H-1, C-13) NMR spectroscopy, mass spectrometry and explored for thermal stability by thermogravimetric analysis. The structure of S-(3-silatranylpropyl)mercaptobenzothiazole was confirmed by single crystal X-ray diffraction analysis. All the synthesized silatranes were effectively screened for antibacterial activity against Gram-negative (Escherichia coli and Vibrio cholerae) and Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus).