Mareva B. Fevre,James L. Hedrick,Victor W. L. Ng,Robert J. Ono,Shrinivas Venkataraman,Zhi Xiang Voo,Yi Yan Yang
申请号：
US14862365
公开号：
US09624191B2
申请日:
2015.09.23
申请国别(地区):
US
年份:
2017
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.
