Synthesis and structure of N-(2-silatranylethyl)pyrazoles
摘要:
Organosilicon pyrazole derivatives containing a 2-siltranylethyl fragment on the nitrogen atom were synthesized, and their structural and stereoelectronic parameters were determined by X-ray analysis and H-1, C-13, and Si-29 NMR spectroscopy. The nature of interaction between the pyrazole and silatrane fragments was studied.
The reaction of trimethoxy(vinyl)silane with diazoles in the presence of metal lithium was studied. The structure of the reaction products was assigned by NMR spectroscopy (H-1, C-13, Si-29, COSY, NOESY, HMBC, and HSQC). An explanation for the different reactivities of reagents (aliphatic amines, diazoles, allylalkylsilanes, vinylalkylsilanes, and vinylalkoxysilanes) was provided.