Removal of aldehyde impurity by reactive polystyrene resini
US7563807B2 · kind B2 · utility
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Key dates
| Filing date | Sep 12, 2003 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Jun 23, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D413/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A purification method in the preparation of a substituted 8-arylquinoline, wherein the aryl group at the 8-position contains a substituent substituted-alkenyl group, utilizes a polystyrene-based sulfonylhydrazine reactive resin to remove an aldehyde impurity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.