Process for methylating naphthalene
US4187255A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1978 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Aug 21, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2521/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Broadly, the present invention is directed to a process for preparing 1-methylnaphthalene and 2-methylnaphthalene wherein the process comprises reacting naphthalene and methanol in the vapor phase at elevated temperatures and optionally under pressure in the presence of an effective amount of activated alumina catalyst. In a preferred embodiment the invention is directed to a process for preparing 2-methylnaphthalene in high selectivity by reacting naphthalene and methanol in the vapor phase at elevated temperatures in the range of about 500.degree. to about 650.degree. C. in the presence of an effective amount of activated alumina catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.