Mareva B. Fevre,James L. Hedrick,Victor W. L. Ng,Robert J. Ono,Shrinivas Venkataraman,Yi Yan Yang
申请号：
US15436955
公开号：
US09951179B2
申请日:
2017.02.20
申请国别(地区):
US
年份:
2018
代理人:
摘要：
Eight-membered ring cyclic carbonates having an oxygen or an acylated nitrogen at position 6 were prepared by reaction of precursor diols with ethyl chloroformate. The cyclic carbonates undergo organocatalyzed ring opening polymerization. In one instance, the initial polymer formed comprises a carbonate repeat unit having a Boc-protected nitrogen in the polymer backbone. Deprotecting the nitrogen with acid forms a cationic carbonate repeat unit having a positive charged secondary ammonium nitrogen in the polymer backbone.
