Synthesis for hydroxyalkylated heterocyclic bases
US7371857B2 · kind B2 · utility
4Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2002 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Oct 29, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D473/34
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A hydroxyalkylated heterocyclic base is prepared by reacting a heterocyclic base with an alkylene carbonate in dimethylacetamide as a solvent, wherein the hydroxyalkylated heterocyclic base is isolated from the solvent using isopropanol or tert-butylmethylether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.