Production of ketazines
US3965097A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1975 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Mar 6, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of a ketazine of the general formula ##EQU1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently is an alkyl, cycloalkyl or aralkyl radical with up to 12 carbon atoms; or an optionally substituted aryl radical with up to 10 carbon atoms, at most two of the radicals R.sub.1, R.sub.2, R.sub.3 and R.sub.4 being aryl radicals, or PA1 R.sub.1 + r.sub.2 and R.sub.3 + R.sub.4 individually is an alkylene radical with from 5 to 10 carbon atoms, Which comprises reacting a 3,3-diorganyl oxaziridine of the formula ##EQU2## with ammonia in the presence of a ketone of the formula ##EQU3## Advantageously the oxaziridine is 3,3-dimethyl oxaziridine, 3,3-methyl ethyl oxaziridine, 3,3-diethyl oxaziridine or 3,3-pentamethylene oxaziridine, the ketone is acetone, methyl ethyl ketone, diethyl ketone or cyclohexanone, the ammonia is used in gaseous form or in solution in water, and the reaction is carried out at a temperature of about -20 to 100.degree.C at a pressure ranging from about normal up to an excess pressure of about 10 atmospheres in a solvent selected from the group consisting of hydrocarbons with up to 12 carbon atoms, lower chlorinated hydrocarbo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.