Process for preparing pyrogallol
US4172960A · kind A · utility
7Cited by
6References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Dec 20, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Pyrogallol is prepared by (A) reacting a halo compound of formula ##STR1## where X represents Br or I, R.sup.1 represents hydrogen, secondary or tertiary alkyl of up to 10 carbon atoms, carboxy or alkoxycarbonyl of 2-5 carbon atoms and R.sup.2 represents hydrogen or alkyl of 1-4 carbon atoms, with an alkali metal alkoxide of formula ROM where M represents an alkali metal and R represents alkyl of 1-4 carbon atoms, to replace each X by OR, and then (B) dealkylating each OR and each OR.sup.2 where R.sup.2 represents alkyl of 1-4 carbon atoms and removing the R.sup.1 group where this is not hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.