Method for ether formation
US5185471A · kind A · utility
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2References
11Claims
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Key dates
| Filing date | Nov 25, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | Nov 25, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of 1,1'-oxy-bis(3-trifluoromethyl-4-nitrobenzene) which comprises reacting a compound of the formula ##STR1## where X is F, Cl, Br or I; with an inorganic base selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, and alkali metal bicarbonates, in the presence of a catalytic quantity of a benzoate catalyst. In addition, benzoate esters of 4-nitro-3-trifluoromethylphenol may be isolated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.