| 초록 |
Selectivity of reaction pathways is important in organic reactions, and many studied on reaction control have been reported in the field of organic synthesis. Ring-opening polymerization has been widely studied and has much attention because of high synthetic efficiency and physical property of the polymers. For example, a polycarbonate was prepared using carbonate monomers such as dimethylene carbonate and trimethylene carbonate. Ring-opening polymerizations of a C=S group containing cyclic carbonate undergoes ring-opening polymerization with cationic or anionic initiators. However, the polymerization of dithiocarbonates has been known to be unsuccessful due to reversible depolymerization. We designed five and six-membered cyclic carbonates with ring strain, which would undergo in irreversible ring-opening reaction. The thermal depolymerization of the prepared polymers occurred depending on monomer structures and examined by H-NMR spectroscopy. |
