2-(5'-Halo-6'-methoxynaphth-2'-yl)-acrylic acid
US3994968A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 1976 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Jan 12, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C205/37
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New compounds, 2-(6'-methoxynaphth-2'-yl)-propylene oxide, 2-(6'-methoxynaphth-2'-yl)proppionaldoxime, 2-hydroxy-2-(6'-methoxynaphth-2'-yl)-propionitrile, 2-(6'-methoxynaphth-2'-yl)acrylonitrile, 2-(6'-methoxynaphth-2'-yl)acrylic acid, the corresponding 5'-halo compounds and 2-(5'-halo-6'-methoxynaphth-2'-yl)propionaldehyde are useful intermediates in producing 2-(6'-methoxynaphth-2'-yl)propionic acid and the corresponding 5'-halo acids from 6-methoxy-2-acetylnaphthalene and the corresponding 5-halo compounds. The 2-propionic acids are anti-inflammatory, analgesic, anti-pyretic and anti-pruritic agents. The 2-propionaldehydes, obtained from the 2-acetyl compounds by way of the 2-propylene oxide, can be converted directly to the 2-propionic acids by way of the 2-propionaldoximes and the 2-priopionitriles or more directly by Jones oxidation. Alternatively the 2-acrylonitriles, obtained from the 2-acetyl compounds by way of the 2-hydroxy-2-propionitrile, can be converted to the 2-propionic acid by way of the 2-acrylic acid or 2-propionitrile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.