Process for producing binaphthol bistriflate
US6399806B1 · kind B1 · utility
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Key dates
| Filing date | Oct 27, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Oct 27, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing a binaphthol bistriflate, 2,2′-bis(trifluoromethanesulfonyloxy)-1,1′-binaphthyl, includes reacting 1,1′-bi-2-naphthol with trifluoromethanesulfonyl fluoride, in a polar solvent, in the presence of an organic base. The reaction proceeds quickly at a low temperature by using a polar solvent as the reaction solvent, while the reaction pressure does not become high. The polar solvent is preferably at least one selected from N,N-dimethylformamide, N,N-dimethylacetoamide, 1-methyl-2-pyrrolidinone, and acetonitrile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.