Process for making N-alkyl bis(2-pyridyl) sulfenimides
US6245912A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2000 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Oct 12, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D277/80
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is disclosed a process for the preparation of sulfenimides comprising: mixing, in a hydrocarbon solvent, a sulfenamide of the formula ##STR1## with an aldehyde of the formula EQU R.sub.4 CHO where X is a sulfur atom, a --C.dbd.N-- group, or a --C.dbd.C-- group, R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, alkyl, and aryl or may be joined to form a saturated or unsaturated ring or aromatic ring, R.sub.3 is alkyl or cycloalkyl, and R.sub.4 is a hydrocarbon radical wherein the carbon bearing the aldehyde function is bonded only to other carbon atoms, a substituted or unsubstituted aryl ring, or a heteroaromatic ring; and heating the mixture at a temperature and for a period of time sufficient to convert the sulfenamide to the sulfenimide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.