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Method for Preparing 4,4′-dihydroxy-[1,1′-biphenyl-3,3′-dicarboxylic Acid]
| Content Provider | The Lens |
|---|---|
| Abstract | The present invention relates to a method for preparing 4,4′-dihydroxy-[1,1′-biphenyl-3,3′-dicarboxylic acid], the method comprising a step for preparing a compound represented by chemical formula 1 by reacting a compound represented by chemical formula 2 with a base according to reaction formula 1. [reaction formula 1] [chemical formula 1] [chemical formula 2] According to the present invention, because use of additional carbon dioxide is unnecessary during the reaction, internal pressure is lowered during same, the reaction can be carried out at a lower temperature, the yield from the synthesis is notably improved as hardening of the resulting substance is absent, and H4dobpdc can be synthesized in large amounts as an additional process for obtaining pure ligands is unnecessary. |
| Related Links | https://www.lens.org/images/patent/US/11465959/B2/US_11465959_B2.pdf |
| Language | English |
| Publisher Date | 2022-10-11 |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Patent |
| Jurisdiction | United States of America |
| Date Applied | 2019-04-30 |
| Agent | Sughrue Mion, Pllc |
| Applicant | Univ Korea Res & Bus Found |
| Application No. | 201917050925 |
| Claim | A method for preparing 4,4′-dihydroxy-[1,1′-biphenyl-3,3′-dicarboxylic acid] represented by Formula 1, comprising reacting the compound represented by Formula 2 with a base, as depicted in Reaction 1: wherein Reaction 1 is carried out in a solvent represented by Formula 3: wherein R1 is H or —(CH2)n—CH3, R2 is —(CH2)m—CH3, R3 is —(CH2)p—CH3, and n, m, and p are each independently an integer from 0 to 20, wherein the base is selected from the group consisting of K2CO3, Na2CO3, and Li2CO3. The method according to claim 1, wherein the solvent represented by Formula 3 is selected from the group consisting of the compounds represented by Formulae 4 to 7: The method according to claim 1, wherein the base is used in an amount of 2 to 4 equivalents per equivalent of the compound represented by Formula 2. The method according to claim 1, wherein the solvent represented by Formula 3 is used in an amount of 1 to 30 equivalents per equivalent of the compound represented by Formula 2. The method according to claim 1, wherein Reaction 1 is carried out at a temperature of 170 to 230° C. The method according to claim 1, wherein Reaction 1 is carried out for at least 12 hours. |
| CPC Classification | ACYCLIC OR CARBOCYCLIC COMPOUNDS |
| Examiner | Ana Z Muresan |
| Extended Family | 005-230-031-979-246 149-290-889-437-348 052-110-072-236-965 107-353-910-778-406 030-977-271-323-918 |
| Patent ID | 11465959 |
| Inventor/Author | Hong Chang Seop Choe Jong Hyeak Kim Jeong Eun |
| IPC | C07C51/15 C07C51/50 C07C65/105 |
| Status | Active |
| Owner | Korea University Research and Business Foundation |
| Simple Family | 005-230-031-979-246 149-290-889-437-348 107-353-910-778-406 030-977-271-323-918 |
| CPC (with Group) | C07C51/15 C07C51/50 C07C65/105 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent/New European patent specification (amended specification after opposition procedure) |
