Abstract
Squalene hydrosilylation by a number of organohydrosilanes R3SiH and Me3GeH, including a mixture of α- and β-isomers of adducts of vinyltrimethylsilane addition to tetramethyldisiloxane: HSi(Me2)O(Me2)Si-C(Me)-SiMe3 and HSi(Me2)O(Me2)Si-(CH2)2-SiMe3, formed both according to Markovnikov's rule and against it, is discussed. We pay attention to the mismatch of values between the electronegativities of carbon, silicon, germanium and hydrogen atoms and the reactivity of C-H, Si-H, and Ge-H bonds. A spectral study of a mixture of α- and β-isomers was carried out. The effect of substituents at elements on its reactivity is discussed: hydrosilanes with chlorine atoms, alkyl and alkoxy groups on silicon are not active in the squalene hydrosilylation. In contrast to them, the α- and β-adducts and their mixture add well to squalene with an unambiguously unknown regioselectivity. The results obtained indicate the special behavior of squalene in electrophilic addition reactions catalyzed by metal complexes, in contrast to substituted ethylenes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
