Process for preparing an intermediate useful in the syntheis of probucol
US5157156A · kind A · utility
4Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1991 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Jul 19, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C319/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing 2,6-di-t-butyl-4-mercapto-phenol. This is accomplished by sulfonation of the phenol with a silylated sulfonating agent (e.g., trimethylsilyl-chlorosulfonate). The sulfonic acid is then reduced directly or is converted to the sulfonyl halide intermediate which is then reduced to yield the 2,6-di-t-butyl-4-mercapto-phenol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.