Processes for preparing calixarenes
US11225450B2 · kind B2 · utility
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11References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Nov 2, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G8/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.