Side chain chlorination of aromatic and heterocyclic ethers
US5840998A · kind A · utility
4Cited by
2References
21Claims
0Family size
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Key dates
| Filing date | Mar 24, 1998 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Mar 24, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method of chlorinating a side chain of a aromatic or heterocyclic ether. The aromatic or heterocyclic ether is mixed with a fluorine-containing aliphatic solvent. The aromatic or heterocyclic ether is contacted with chlorine radical at an elevated temperature which results in its chlorination. The chlorinated product is preferably insoluble in the solvent and separates, forming two phases. The solvent phase can be recycled and reused.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.