Chiral poly(aza-norbornene) derivatives with tunable tacticity and living ROMP capability.

ABSTRACT: Ring-opening metathesis polymerization (ROMP) is a powerful tool to produce various polymers with diverse structures and functions, but its tacticity controllability, especially for enantio-pure monomers, is relatively unexplored. The challenge lies in both the difficulty of achieving chiral monomers and the control of head/tail regioselectivity during ROMP. We herein report the synthesis and application of a sulfonamide derivative of commercial chiral Vince lactam. The easily available monomer showed simultaneous living ROMP capability and tunable head/tail regioselectivity with commercial Ru-based catalysts. More specifically, the use of the Grubbs' III catalyst (Ru-3) gave rise to head-to-tail regioselectivity, leading to isotactic "living" polymers. In contrast, the use of cyclometalat

SUBMITTER: Bai J 

PROVIDER: S-EPMC12679507 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature