Work

Convenient Synthesis of New Si-H and Si-Vinyl Functionalized Stereospecific 8-, 12- and 24-Membered Cyclosiloxanes

Year: 2016

Type: article

Abstract: Two approaches to the selective synthesis of polyfunctional stereoregular cyclosiloxanes from polyhedral organometallasiloxanes are reported.The molecules of organometallasiloxanes possess sandwich or globular structure and contain one or two stereoregular organocyclosiloxanolate fragments coordinated to metal ions.According to the first approach organometallasiloxanes were prepared primarily and then were treated with chlorodimethylsilane or dimethylchlorovinylsilane. The second method is based on the initial transforming of organometallasiloxanes into cyclic polysiloxanols reacted afterwards with corresponding chlorosilanes.The synthesized functional stereoregular cyclosiloxanes are fully characterized by NMR-and IR-spectroscopy, HRMS, TGA, and DSC.

Source: Macroheterocycles

DOI: 10.6060/mhc160751s

Authors: Anton A. Anisimov, Yuriy N. Kononevich, Mikhail I. Buzin, Alexandr S. Peregudov, Olga I. Shchegolikhina, Aziz M. Muzafarov

Institutions: Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Institute of Synthetic Polymeric Materials

Language: English

Topic: Silicone and Siloxane Chemistry

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: diamond

Funder: Russian Science Foundation

Award: G1267539231