Process for producing aminoaryl-.beta.-sulfatoethylsulfone
US4482501A · kind A · utility
2Cited by
3References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 16, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Jun 16, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process for producing sulfuric acid semiesters of the formula: EQU NH.sub.2 -A--SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H).sub.n wherein A is a substituted or unsubstituted aromatic group, and n is an integer of 1 or 2, which are important as intermediates of the vinylsulfonic reactive dyes, said process comprising reacting a compound of the formula: EQU B-NH-A--SO.sub.2 CH.sub.2 CH.sub.2 OH).sub.n wherein A and n are as defined above, and B is hydrogen or a group capable of being hydrolyzed by an acid, with an acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.