Table 4 Attempted ROP of monomer 3a.

From: Cyclic carbamates based on (R)-(+)-limonene oxide for ring-opening polymerization

  1. aReaction conditions: monomer 3a: catalyst 1:0.004. bDetermined through1H NMR spectroscopy (chain end determination). cMixed cationic propagations: ROP and electrophilic addition to the alkene. dNot determined.