Novel procedure for the preparation of activated nitrosocarbamates
US4883903A · kind A · utility
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5Claims
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Key dates
| Filing date | Apr 22, 1988 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Apr 22, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C271/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The subject of the invention is a novel procedure for the preparation of the compounds of formula I: ##STR1## in which n varies in particular from 2 to 5 and R represents Cl, Br or F PA0 Z represents in particular hydrogen, characterized in that the halogenoformate of formula II: ##STR2## R and n having the meanings indicated above, Y representing a halogen, is made to react with NH.sub.2 CH.sub.2 CH.sub.2 Cl to form the compound of formula Ia: ##STR3## in which R has the meanings indicated above, and in that the compound Ia is treated directly with nitrosylsulfuric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.