Method of making ketals and acetals
US8604223B2 · kind B2 · utility
2Cited by
15References
46Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 9, 2010 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Apr 9, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D317/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The reaction of alcohols with oxocarboxylates to form acetals or ketals is catalyzed by unexpectedly low levels of protic acids. By employing low acid catalyst levels compared to amounts conventionally used, rapid formation of acetal or ketal is facilitated while the formation of oxocarboxylate esters is minimized. Further employing a significant molar excess of oxocarboxylate in conjunction with low acid catalyst level gives rise to the rapid and clean formation of acetals and ketals from oxocarboxylates and alcohols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.