Preparation process for piperonal
US5095128A · kind A · utility
1Cited by
1References
10Claims
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Key dates
| Filing date | Nov 2, 1990 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Nov 2, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D317/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Preparation process for piperonal by decarboxylating oxidation of 3,4-methylenedioxy mandelic acid by nitric acid in aqueous medium in the presence of hydrochloric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.