A new silyl-type linker for the automated solid-phase synthesis of oligodeoxynucleotides was developed. A hydrosilane-type reagent for introduction of the silyl linker was synthesized in an overall yield of 50% from 1,4-dibromobenzene. By using this linker, an oligonucleotide having base-labile protecting groups Could be isolated from the controlled pore glass under neutral conditions.