Synthesis of 4-substituted phthalaldehyde
US6891069B1 · kind B1 · utility
1Cited by
33References
13Claims
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Key dates
| Filing date | Jan 30, 2004 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Jan 30, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C205/11
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed herein are methods of synthesizing a 4-substituted-benzene-1,2-carbaldehyde. In one aspect, a method may include reacting a 4-substituted-1,2-bis(dibromomethyl) benzene with sulfuric acid to form a reaction product, introducing a solid sodium bicarbonate into the reaction product, and hydrolyzing the reaction product to form a 4-substituted-benzene-1,2-carbaldehyde, after introducing the bicarbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.