Process for producing p-hydroxybenzaldehyde
US4273941A · kind A · utility
2Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1979 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Jul 6, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/64
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing p-hydroxybenzaldehyde through p-aminobenzaldehyde from p-nitrotoluene, comprising reacting p-nitrotoluene with sodium polysulphide in an alcohol-alkali aqueous solution mixed solvent in the presence or absence of an aprotic polar compound to produce p-aminobenzaldehyde, diazotizing the p-aminobenzaldehyde and then hydrolyzing the diazotized p-aminobenzaldehyde to produce p-hydroxybenzaldehyde.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.