Process for preparing phenols and thiophenols
US4278816A · kind A · utility
5Cited by
1References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1977 |
| Grant date | Jul 14, 1981 |
| Priority date | — |
| Expiry date | Aug 26, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/055
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Phenols and thiophenols are produced by reacting the corresponding diphenyl ether compound with hydrogen sulfide in contact with an absorptive catalyst, such as charcoal, activated carbon, calcined petroleum coke, etc. Temperatures in the range of from about 300.degree. to about 900.degree. C. are employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.