Polymeric reagents: preparation and characterization of novel solid-phase, silylating agents derived from copolymers containing 4-[3′-(dimethyl phenyl silyl)-propyl]-styrene

Two novel reactive polymers useful as protecting groups for hydroxyls have been prepared by copolymerization of a silicon containing monomer, 4-[3′-(dimethyl phenyl silyl)-propyl]-styrene, with styrene and divinylbenzene, followed by chemical modification of the resulting insoluble polymer beads. The polymeric reagents containing trialkylsilyl chloride or trialkylsilyl trifluoroacetate moieties are effective for the protection of alcohols and a procedure for their facile regeneration is described.