Process for the preparation and purification of 4,4'-dihydroxy-alpha-substituted stilbene
US5874645A · kind A · utility
0Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Apr 25, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/09
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process which includes the step of heating a compound of Formula (I): ##STR1## wherein R.sup.1 is a hydroxyphenyl group or a group of Formula (II): ##STR2## and R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently in each occurrence H or a C.sub.1-10 alkyl group; to a temperature in the range of from 100.degree. C. to 400.degree. C. under reaction conditions sufficient to form one or more 4,4'-dihydroxy-alpha-substituted stilbenes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.