Methods for preparing benzodithiophenes
US7956199B2 · kind B2 · utility
10Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2009 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Oct 8, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2261/92
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods of adding substituents to a benzodithiophene are disclosed. A benzodithiophene is reacted with a reagent to directly add the substituent to the benzene core of the benzodithiophene. This method eliminates steps from prior process and eliminates the need for hydrogenation, allowing for a safer and more scaleable process. The resulting benzodithiophenes are suitable for use in semiconductor polymers and have no loss of performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.