Selective ether cleavage synthesis of liquid crystals
US7147800B2 · kind B2 · utility
7Cited by
80References
134Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2003 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Jun 29, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/935
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for making platform molecules comprising: reacting 4-alkoxy benzoyl chloride with R2-hydroquinone under first conditions effective to produce bis 1,4[4-alkoxy-benzoyloxy]-R2-phenylene comprising bis terminal alkoxy groups wherein R2 is a bulky organic group; and, subjecting the bis 1,4[4-alkoxy-benzoyloxy]-R2-phenylene to second conditions effective to selectively cleave the bis terminal alkoxy groups to produce a solution comprising complexes comprising diphenolic platform molecules comprising bis terminal hydroxyl groups, the second conditions also being effective to precipitate the complexes out of the solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.