Method for producing redox shuttles
US8969625B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2012 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Jan 7, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/146
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A single step method for producing a redox shuttle having the formula 2,5-di-tert-butyl-1,4-phenylene tetraethyl bis(phosphate) is provided, the method comprising phosphorylating tert butyl hydroquinone with a phosphate-containing reagent. Also provided is method for producing 2,5-di-tert-butyl-1,4-phenylene tetraethyl bis(phosphate), the method comprising solubilizing tert-butyl hydroquinone and tetrabutylammonium bromide with methyltetrahydrofuran to create a mixture; heating the mixture while adding base to the mixture in an amount to turn the mixture orange; and adding diethyl chlorophosphate to the orange mixture in an amount to phosphorylate the hydroquinone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.