Nickel(II) α-Diimine Catalyst for Grignard Metathesis (GRIM) Polymerization (pages 1748–1752)
Harsha D. Magurudeniya, Prakash Sista, Jacob K. Westbrook, Taryn E. Ourso, Khuong Nguyen, Marie C. Maher, Mussie G. Alemseghed, Michael C. Biewer and Mihaela C. Stefan
Article first published online: 25 AUG 2011 | DOI: 10.1002/marc.201100433
A nickel α-diimine catalyst was successfully employed as a catalyst for the Grignard metathesis (GRIM) polymerization of 2,5-dibromo-3-hexylthiophene, 2-bromo-5-iodo-3-hexylthiophene and bulky 2,6-dibromo-4,8-bis(4-decylphenylethynyl)benzo[1,2-b:4,5-b′]dithiophene monomer. Poly(3-hexylthiophene) containing ≈98% head-to-tail couplings was synthesized by GRIM polymerization 2-bromo-5-iodo-3-hexylthiophene.