Process for preparing quinoline bases
US5700942A · kind A · utility
6Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1996 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Jul 11, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D215/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are provided processes for preparing quinolines by vapor phase reaction of a substituted or unsubstituted aniline base, formaldehyde and a C.sub.2 -C.sub.4 aldehyde wherein the aldehydes:aniline base molar ratio is at least 2:1. More preferred processes of the invention achieve high selectivities and yields of 8-methylquinoline, and high conversions of the aniline base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.