Process for producing 3,4,9,10-tetrathioperylene and 3,4,9,10-tetraselenoperylene
US4505858A · kind A · utility
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Key dates
| Filing date | Sep 30, 1983 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Sep 30, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D517/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Chalcogen-substituted perylenes of the formula I ##STR1## wherein X is S or Se can be obtained in a simple manner, under mild reaction conditions and in pure form by heating a compound of the formula II ##STR2## in nitrobenzene, or in a mixture of nitrobenzene and an organic solvent miscible therewith and inert under the reaction conditions, in the presence of a Lewis acid or a protonic acid at 20.degree. to 120.degree. C. The perylenes of the formula I are used for example as donors for the production of organic conductors or semiconductors (charge-transfer-salts).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.