Abstract

The present state of the synthesis of cyclic organosiloxanes and organocarbosiloxanes with assigned disposition of various functional groups is reviewed. Organosilicon monomers containing functional groups at silicon atoms are extremely inclined to various reactions of transformation, which produce:Si O Si: bonds. At the present time, the most practically significant organosilicon polymers are industrially produced from organochlorosilanes of various functionalities. To carry out directed synthesis of oligomers and block-copolymers with cyclic and polycyclic fragments in the macromolecular backbone, methods of linear diand polyfunctional oligochlororganosiloxanes synthesis have been developed, on the basis of which organocyclosiloxanes with the given disposition of chlorine atoms and other functional groups at atoms of silicon may be derived.

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