Process for synthesizing N,N'-dithiobis(sulfonamides)
US4877901A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Oct 28, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for synthesizing N,N'-dithiobis(sulfonamides) by reacting a sulfonamide of the formula: ##STR1## with sulfur monochloride and caustic in a mixed organic-aqueous mediua, wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl radicals having from about 1 to about 20 carbon atoms, cycloalkyl radicals having from about 5 to about 20 carbon atoms, phenyl radicals, alkaryl radicals having from about 7 to 20 carbon atoms, and haloaryl radicals having about 6 to about 10 carbon atoms and where R.sup.1 is also selected from radicals having the formula: ##STR2## wherein R.sup.3 and R.sup.4 are individually selected from said alkyl, cycloalkyl, phenyl, alkaryl and haloaryl radicals and wherein R.sup.3 and R.sup.4 can be joined together to represent radicals selected from --CH.sub.2 --.sub.n, where n is an integer of 4 to 7 and --CH.sub.2).sub.2 O--CH.sub.2 --.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.