Preparation and characterization of 1,2,3-triazole-cured polymers from endcapped azides and alkynes (pages 238–256)
Alan R. Katritzky, Nabin K. Meher, Sureyya Hanci, Reena Gyanda, Srinivasa R. Tala, Sindhu Mathai, Randolph S. Duran, Sophie Bernard, Firouzeh Sabri, Sandeep K. Singh, Jacek Doskocz and David A. Ciaramitaro
Article first published online: 21 NOV 2007 | DOI: 10.1002/pola.22376
Various long chain hydroxyl-terminated polyols have been endcapped as alkynes and azides via tosylate, mesylate or nitrate intermediates. 1,3-Dipolar cycloaddition reactions of various alkynes and azides were studied to prepare triazole-cured polymers with degree of polymerization up to ≈29. Reactions under neat conditions were more convenient compared to reactions in the presence of solvent. Most of the reactions discussed went to completion between room temperature and 80 °C. All the endcapped polyols and triazole-cured polymers have been characterized by NMR spectroscopy, elemental analysis and gel permeation chromatography.