The synthesis of norbornene copolymer with hydroxy groups was performed by the copolymerization of norbornene (NB) with 9-(7-octeny1)-borabicyclo[3.3.1]nonane (OctBBN) using ansa-dimethylsilyl (fluorenyl)(amido)titanium catalyst (1) activated by Ph3CB(C6F5)(4) and successive oxidation. The glass transition temperature (T-g) of the copolymer was higher than the polymer with the same hydroxy group content synthesized by the copolymerization of NB and omega-alkenylaluminum. The C-13 NMR spectrum of the copolymer clearly showed that alkylborane moiety was converted quantitatively to hydroxy groups. Copolymerization of NB and OctBBN by the 1-MMAO/BHT system proceeded in a pseudo-living manner without chain transfer reaction. (C) 2014 Elsevier Ltd. All rights reserved.