From the discovery of sodiumoxyorganoalkoxysilanes to the organosilicon dendrimers and back

Abstract

Upon being discovered 20 years ago, sodiumoxyorganoalkoxysilanes became the key to the world of organoelement dendrimers. Even considering the great variety of objects that had appeared in this area during the last 20 years, the organosilicon dendrimers are still one of the most actual objects in this class. Above all, this is fair concerning the carbosilane systems. The high reactivity of the functional groups, the well controlled chemistry of their transformations, and the inertness of the molecular skeleton are the reason for making these systems highly actual in two main regards: as model objects for the deep research of the dendrimers' properties and as polyfunctional matrixes for numerous derivatives. In this review, we were mainly focusing on the importance of the former part. In the conclusion, we showed the motivation for further development of this area both in regard of synthesis of new carbosilane systems and further development of siloxane dendrimers.

New Control Over Silicone Synthesis using SiH Chemistry: The Piers–Rubinsztajn Reaction

“… Silicone dendrimer strategies as described by Masamune et al . Muzafarov and co‐workers, and Kuroda and his group …”

Nonhydrolytic Synthesis of Branched Alkoxysiloxane Oligomers Si[OSiH(OR)2]4 (R=Me, Et)

“…The formation of siloxane bonds without using silanols has attracted much interest. [5][6][7][8][9][10][11][12][13][14][15][16] Alkoxysiloxanes can be synthesized by the reaction between chlorosilane and sodium alkoxysilanolates. [5] On the other hand, the use of alkoxysi-lanes as a precursor with a Lewis acid catalyst is the most promising pathway.…”

Achievements in polycondensation and condensation polymers

“…In this case, the synthesis of initial reactive compounds is important. New approaches to the synthesis of widely used sodium oxyorganoalkoxysilanes and other monomers were elaborated [215,216].…”