Condensed heterocyclic compound
US-2017349605-A1 · Dec 7, 2017 · US
Cyclic carbonate monomers and ring opened polycarbonates therefrom
US9951179B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9951179-B2 |
| Application number | US-201715436955-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 20, 2017 |
| Priority date | Mar 24, 2014 |
| Publication date | Apr 24, 2018 |
| Grant date | Apr 24, 2018 |
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed is: 1. A compound of formula (N-12): wherein R 3 is a hydrocarbyl group comprising 1 to 10 carbons. 2. The compound of claim 1 , wherein R 3 is selected from the group consisting of methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, t-butyl, phenyl, benzyl, and allyl. 3. The compound of claim 1 , wherein the compound is 4. The compound of claim 1 , wherein the compound is 5. The compound of claim 1 , wherein R 3 is ethyl. 6. The compound of claim 1 , wherein R 3 is n-propyl. 7. The compound of claim 1 , wherein R 3 is iso-propyl. 8. The compound of claim 1 , wherein R 3 is n-butyl. 9. The compound of claim 1 , wherein R 3 is sec-butyl. 10. The compound of claim 1 , wherein R 3 is phenyl. 11. The compound of claim 1 , wherein R 3 is benzyl. 12. The compound of claim 1 , wherein R 3 is allyl.
Assignees
Inventors
Classifications
- C07D323/00Primary
Heterocyclic compounds containing more than two oxygen atoms as the only ring hetero atoms · CPC title
- C08G64/0241Primary
containing nitrogen · CPC title
containing —O—CO—O— groups; Thio analogues thereof · CPC title
using carbonates · CPC title
having one nitrogen atom · CPC title
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- What does patent US9951179B2 cover?
- 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 nitrog…
- Who is the assignee on this patent?
- IBM, Agency Science Tech & Res
- What technology area does this patent fall under?
- Primary CPC classification C07D323/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 24 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).