Separation of isomers, e. g., phenethyl bromide from 1-phenyl-1-bromoethane
US5181992A · kind A · utility
2Cited by
6References
7Claims
0Family size
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Key dates
| Filing date | Jun 13, 1990 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Jun 13, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Mixtures of isomers, e.g., mixtures of phenethyl bromide and 1-phenyl-1-bromoethane, are separated by (a) selectively condensing one such isomer with an aromatic compound bearing at least one aryl (nuclear) hydrogen atom, e.g., xylene, in the presence of a catalytically effective amount of a Friedel-Crafts catalyst, e.g., ferric chloride, and then (b) separating the product of condensation, e.g., phenylxylylethane, from the unreacted isomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.