Anionic polymerization initiators containing protected functional groups. II

An organolithium reagent substituted with a primary amine‐protecting group [i.e.,N(TMS)2] has been prepared and used to polymerize 1,3‐butadiene and isoprene. A method is described for converting the resultingN(TMS)2‐containing polydienes intoNH2‐containing polymers. Both N(TMS)2‐ and NH2‐terminated polydienes have been characterized with regard to microstructure, Mn, and Mw/Mn data, as well as qualitative and quantitative end‐group analyses. The described preparative procedures represent a convenient route to the elusive primary amine‐terminated polydienes.